From 1df841bb542323adce92013cd55eb24ab238a1dc Mon Sep 17 00:00:00 2001
From: Andrey Smirnov <andrey.smirnov@talos-systems.com>
Date: Tue, 14 Mar 2023 14:33:11 +0400
Subject: [PATCH] refactor: change the interface of META

Use a global instance, handle loading/saving META in global context.

Deprecate legacy syslinux ADV, provide an easier interface for
consumers.

Expose META as resources.

Fix the bootloader revert process (it was completely broken for quite a
while :sad:).

This is a first step which mostly does preparation work, real changes
will come in the next PRs:

* add APIs to write to META
* consume META keys for platform network config for `metal`
* custom key for URL `${code}`

Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>
---
 .../definitions/runtime/runtime.proto         |   5 +
 cmd/installer/pkg/install/install.go          |  13 +-
 .../server/v1alpha1/v1alpha1_server.go        |  36 +-
 internal/app/machined/main.go                 |  14 -
 internal/app/machined/pkg/runtime/state.go    |  12 +
 .../pkg/runtime/v1alpha1/bootloader/meta.go   | 137 -------
 .../runtime/v1alpha1/v1alpha1_sequencer.go    |  15 +
 .../v1alpha1/v1alpha1_sequencer_tasks.go      |  55 +--
 .../pkg/runtime/v1alpha1/v1alpha1_state.go    | 149 ++++++--
 .../pkg/runtime/v1alpha2/v1alpha2_state.go    |   1 +
 .../app/machined/pkg/system/services/etcd.go  |  18 +-
 internal/app/machined/revert.go               | 114 ++++++
 internal/pkg/meta/constants.go                |  16 +
 .../meta/internal}/adv/adv.go                 |  15 +-
 .../meta/internal}/adv/syslinux/syslinux.go   |  35 +-
 .../internal}/adv/syslinux/syslinux_test.go   |  21 +-
 .../internal}/adv/syslinux/testdata/adv.sys   | Bin
 .../meta/internal}/adv/talos/talos.go         |  14 +-
 .../meta/internal}/adv/talos/talos_test.go    |   9 +-
 internal/pkg/meta/meta.go                     | 341 ++++++++++++++++++
 internal/pkg/meta/meta_test.go                |  98 +++++
 .../definitions/runtime/runtime.pb.go         | 169 ++++++---
 .../definitions/runtime/runtime_vtproto.pb.go | 137 +++++++
 .../resources/runtime/deep_copy.generated.go  |   8 +-
 pkg/machinery/resources/runtime/meta_key.go   |  62 ++++
 pkg/machinery/resources/runtime/runtime.go    |   2 +-
 .../resources/runtime/runtime_test.go         |   1 +
 website/content/v1.4/reference/api.md         |  16 +
 28 files changed, 1188 insertions(+), 325 deletions(-)
 delete mode 100644 internal/app/machined/pkg/runtime/v1alpha1/bootloader/meta.go
 create mode 100644 internal/app/machined/revert.go
 create mode 100644 internal/pkg/meta/constants.go
 rename internal/{app/machined/pkg/runtime/v1alpha1/bootloader => pkg/meta/internal}/adv/adv.go (64%)
 rename internal/{app/machined/pkg/runtime/v1alpha1/bootloader => pkg/meta/internal}/adv/syslinux/syslinux.go (88%)
 rename internal/{app/machined/pkg/runtime/v1alpha1/bootloader => pkg/meta/internal}/adv/syslinux/syslinux_test.go (99%)
 rename internal/{app/machined/pkg/runtime/v1alpha1/bootloader => pkg/meta/internal}/adv/syslinux/testdata/adv.sys (100%)
 rename internal/{app/machined/pkg/runtime/v1alpha1/bootloader => pkg/meta/internal}/adv/talos/talos.go (93%)
 rename internal/{app/machined/pkg/runtime/v1alpha1/bootloader => pkg/meta/internal}/adv/talos/talos_test.go (83%)
 create mode 100644 internal/pkg/meta/meta.go
 create mode 100644 internal/pkg/meta/meta_test.go
 create mode 100644 pkg/machinery/resources/runtime/meta_key.go

diff --git a/api/resource/definitions/runtime/runtime.proto b/api/resource/definitions/runtime/runtime.proto
index 5c9fffe99..89c2329ce 100755
--- a/api/resource/definitions/runtime/runtime.proto
+++ b/api/resource/definitions/runtime/runtime.proto
@@ -37,6 +37,11 @@ message MachineStatusStatus {
   repeated UnmetCondition unmet_conditions = 2;
 }
 
+// MetaKeySpec describes status of the defined sysctls.
+message MetaKeySpec {
+  string value = 1;
+}
+
 // MountStatusSpec describes status of the defined sysctls.
 message MountStatusSpec {
   string source = 1;
diff --git a/cmd/installer/pkg/install/install.go b/cmd/installer/pkg/install/install.go
index 1031eb662..768f5fe65 100644
--- a/cmd/installer/pkg/install/install.go
+++ b/cmd/installer/pkg/install/install.go
@@ -16,8 +16,8 @@ import (
 	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/board"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader"
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader/grub"
+	"github.com/siderolabs/talos/internal/pkg/meta"
 	"github.com/siderolabs/talos/internal/pkg/mount"
 	"github.com/siderolabs/talos/pkg/machinery/constants"
 	"github.com/siderolabs/talos/pkg/machinery/kernel"
@@ -323,20 +323,19 @@ func (i *Installer) Install(seq runtime.Sequence) (err error) {
 	}
 
 	if seq == runtime.SequenceUpgrade {
-		var meta *bootloader.Meta
+		var metaState *meta.Meta
 
-		if meta, err = bootloader.NewMeta(); err != nil {
+		if metaState, err = meta.New(context.Background(), nil); err != nil {
 			return err
 		}
 
-		//nolint:errcheck
-		defer meta.Close()
+		var ok bool
 
-		if ok := meta.LegacyADV.SetTag(adv.Upgrade, string(i.Current)); !ok {
+		if ok, err = metaState.SetTag(context.Background(), meta.Upgrade, string(i.Current)); !ok || err != nil {
 			return fmt.Errorf("failed to set upgrade tag: %q", i.Current)
 		}
 
-		if err = meta.Write(); err != nil {
+		if err = metaState.Flush(); err != nil {
 			return err
 		}
 	}
diff --git a/internal/app/machined/internal/server/v1alpha1/v1alpha1_server.go b/internal/app/machined/internal/server/v1alpha1/v1alpha1_server.go
index f6dff928b..0ddf2facd 100644
--- a/internal/app/machined/internal/server/v1alpha1/v1alpha1_server.go
+++ b/internal/app/machined/internal/server/v1alpha1/v1alpha1_server.go
@@ -55,8 +55,6 @@ import (
 	installer "github.com/siderolabs/talos/cmd/installer/pkg/install"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/disk"
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader"
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader/grub"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/system"
 	"github.com/siderolabs/talos/internal/app/resources"
@@ -67,6 +65,7 @@ import (
 	"github.com/siderolabs/talos/internal/pkg/containers/cri"
 	"github.com/siderolabs/talos/internal/pkg/etcd"
 	"github.com/siderolabs/talos/internal/pkg/install"
+	"github.com/siderolabs/talos/internal/pkg/meta"
 	"github.com/siderolabs/talos/internal/pkg/miniprocfs"
 	"github.com/siderolabs/talos/internal/pkg/mount"
 	"github.com/siderolabs/talos/pkg/archiver"
@@ -474,14 +473,14 @@ func (s *Server) Shutdown(ctx context.Context, in *machine.ShutdownRequest) (rep
 // Upgrade initiates an upgrade.
 //
 //nolint:gocyclo,cyclop
-func (s *Server) Upgrade(ctx context.Context, in *machine.UpgradeRequest) (reply *machine.UpgradeResponse, err error) {
+func (s *Server) Upgrade(ctx context.Context, in *machine.UpgradeRequest) (*machine.UpgradeResponse, error) {
 	actorID := uuid.New().String()
 
 	var mu *concurrency.Mutex
 
 	ctx = context.WithValue(ctx, runtime.ActorIDCtxKey{}, actorID)
 
-	if err = s.checkSupported(runtime.Upgrade); err != nil {
+	if err := s.checkSupported(runtime.Upgrade); err != nil {
 		return nil, err
 	}
 
@@ -489,7 +488,7 @@ func (s *Server) Upgrade(ctx context.Context, in *machine.UpgradeRequest) (reply
 
 	log.Printf("validating %q", in.GetImage())
 
-	if err = install.PullAndValidateInstallerImage(ctx, s.Controller.Runtime().Config().Machine().Registries(), in.GetImage()); err != nil {
+	if err := install.PullAndValidateInstallerImage(ctx, s.Controller.Runtime().Config().Machine().Registries(), in.GetImage()); err != nil {
 		return nil, fmt.Errorf("error validating installer image %q: %w", in.GetImage(), err)
 	}
 
@@ -518,19 +517,12 @@ func (s *Server) Upgrade(ctx context.Context, in *machine.UpgradeRequest) (reply
 	runCtx := context.WithValue(context.Background(), runtime.ActorIDCtxKey{}, actorID)
 
 	if in.GetStage() {
-		meta, err := bootloader.NewMeta()
-		if err != nil {
-			return nil, fmt.Errorf("error reading meta: %w", err)
-		}
-		//nolint:errcheck
-		defer meta.Close()
-
-		if !meta.ADV.SetTag(adv.StagedUpgradeImageRef, in.GetImage()) {
-			return nil, fmt.Errorf("error adding staged upgrade image ref tag")
+		if ok, err := s.Controller.Runtime().State().Machine().Meta().SetTag(ctx, meta.StagedUpgradeImageRef, in.GetImage()); !ok || err != nil {
+			return nil, fmt.Errorf("error adding staged upgrade image ref tag: %w", err)
 		}
 
 		opts := install.DefaultInstallOptions()
-		if err = opts.Apply(install.OptionsFromUpgradeRequest(s.Controller.Runtime(), in)...); err != nil {
+		if err := opts.Apply(install.OptionsFromUpgradeRequest(s.Controller.Runtime(), in)...); err != nil {
 			return nil, fmt.Errorf("error applying install options: %w", err)
 		}
 
@@ -539,11 +531,13 @@ func (s *Server) Upgrade(ctx context.Context, in *machine.UpgradeRequest) (reply
 			return nil, fmt.Errorf("error serializing install options: %s", err)
 		}
 
-		if !meta.ADV.SetTag(adv.StagedUpgradeInstallOptions, string(serialized)) {
-			return nil, fmt.Errorf("error adding staged upgrade install options tag")
+		var ok bool
+
+		if ok, err = s.Controller.Runtime().State().Machine().Meta().SetTag(ctx, meta.StagedUpgradeInstallOptions, string(serialized)); !ok || err != nil {
+			return nil, fmt.Errorf("error adding staged upgrade install options tag: %w", err)
 		}
 
-		if err = meta.Write(); err != nil {
+		if err = s.Controller.Runtime().State().Machine().Meta().Flush(); err != nil {
 			return nil, fmt.Errorf("error writing meta: %w", err)
 		}
 
@@ -572,16 +566,14 @@ func (s *Server) Upgrade(ctx context.Context, in *machine.UpgradeRequest) (reply
 		}()
 	}
 
-	reply = &machine.UpgradeResponse{
+	return &machine.UpgradeResponse{
 		Messages: []*machine.Upgrade{
 			{
 				Ack:     "Upgrade request received",
 				ActorId: actorID,
 			},
 		},
-	}
-
-	return reply, nil
+	}, nil
 }
 
 // ResetOptions implements runtime.ResetOptions interface.
diff --git a/internal/app/machined/main.go b/internal/app/machined/main.go
index 4aaf791ae..0b88b709b 100644
--- a/internal/app/machined/main.go
+++ b/internal/app/machined/main.go
@@ -27,7 +27,6 @@ import (
 	"github.com/siderolabs/talos/internal/app/dashboard"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime"
 	v1alpha1runtime "github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1"
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/system"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/system/services"
 	"github.com/siderolabs/talos/internal/app/maintenance"
@@ -61,19 +60,6 @@ func recovery() {
 	}
 }
 
-func revertBootloader() {
-	if meta, err := bootloader.NewMeta(); err == nil {
-		if err = meta.Revert(); err != nil {
-			log.Printf("failed to revert upgrade: %v", err)
-		}
-
-		//nolint:errcheck
-		meta.Close()
-	} else {
-		log.Printf("failed to open meta: %v", err)
-	}
-}
-
 // syncNonVolatileStorageBuffers invokes unix.Sync and waits up to 30 seconds
 // for it to finish.
 //
diff --git a/internal/app/machined/pkg/runtime/state.go b/internal/app/machined/pkg/runtime/state.go
index a5fae2483..412d6c1b2 100644
--- a/internal/app/machined/pkg/runtime/state.go
+++ b/internal/app/machined/pkg/runtime/state.go
@@ -40,6 +40,18 @@ type MachineState interface {
 	KexecPrepared(bool)
 	IsKexecPrepared() bool
 	DBus() DBusState
+	Meta() Meta
+}
+
+// Meta defines the access to META partition.
+type Meta interface {
+	ReadTag(t uint8) (val string, ok bool)
+	ReadTagBytes(t uint8) (val []byte, ok bool)
+	SetTag(ctx context.Context, t uint8, val string) (bool, error)
+	SetTagBytes(ctx context.Context, t uint8, val []byte) (bool, error)
+	DeleteTag(ctx context.Context, t uint8) (bool, error)
+	Reload(ctx context.Context) error
+	Flush() error
 }
 
 // ClusterState defines the cluster state.
diff --git a/internal/app/machined/pkg/runtime/v1alpha1/bootloader/meta.go b/internal/app/machined/pkg/runtime/v1alpha1/bootloader/meta.go
deleted file mode 100644
index 45a230a88..000000000
--- a/internal/app/machined/pkg/runtime/v1alpha1/bootloader/meta.go
+++ /dev/null
@@ -1,137 +0,0 @@
-// This Source Code Form is subject to the terms of the Mozilla Public
-// License, v. 2.0. If a copy of the MPL was not distributed with this
-// file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-package bootloader
-
-import (
-	"fmt"
-	"io"
-	"os"
-
-	"github.com/siderolabs/go-blockdevice/blockdevice/probe"
-
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv"
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/syslinux"
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/talos"
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader/grub"
-	"github.com/siderolabs/talos/pkg/machinery/constants"
-)
-
-// Meta represents the meta reader.
-type Meta struct {
-	*os.File
-	LegacyADV adv.ADV
-	ADV       adv.ADV
-}
-
-// NewMeta initializes and returns a `Meta`.
-func NewMeta() (meta *Meta, err error) {
-	var (
-		f   *os.File
-		dev *probe.ProbedBlockDevice
-	)
-
-	dev, err = probe.GetDevWithPartitionName(constants.MetaPartitionLabel)
-	if err != nil {
-		return nil, err
-	}
-
-	part, err := dev.OpenPartition(constants.MetaPartitionLabel)
-	if err != nil {
-		return nil, err
-	}
-
-	f = part.Device()
-
-	adv, err := talos.NewADV(f)
-	if adv == nil && err != nil {
-		// if adv is not nil, but err is nil, it might be missing ADV, ignore it
-		return nil, err
-	}
-
-	legacyAdv, err := syslinux.NewADV(f)
-	if err != nil {
-		return nil, err
-	}
-
-	return &Meta{
-		File:      f,
-		LegacyADV: legacyAdv,
-		ADV:       adv,
-	}, nil
-}
-
-func (m *Meta) Write() error {
-	serialized, err := m.ADV.Bytes()
-	if err != nil {
-		return err
-	}
-
-	n, err := m.File.WriteAt(serialized, 0)
-	if err != nil {
-		return err
-	}
-
-	if n != len(serialized) {
-		return fmt.Errorf("expected to write %d bytes, wrote %d", len(serialized), n)
-	}
-
-	serialized, err = m.LegacyADV.Bytes()
-	if err != nil {
-		return err
-	}
-
-	offset, err := m.File.Seek(-int64(len(serialized)), io.SeekEnd)
-	if err != nil {
-		return err
-	}
-
-	n, err = m.File.WriteAt(serialized, offset)
-	if err != nil {
-		return err
-	}
-
-	if n != len(serialized) {
-		return fmt.Errorf("expected to write %d bytes, wrote %d", len(serialized), n)
-	}
-
-	return m.File.Sync()
-}
-
-// Revert reverts the default bootloader label to the previous installation.
-func (m *Meta) Revert() (err error) {
-	label, ok := m.LegacyADV.ReadTag(adv.Upgrade)
-	if !ok {
-		return nil
-	}
-
-	if label == "" {
-		m.LegacyADV.DeleteTag(adv.Upgrade)
-
-		return m.Write()
-	}
-
-	conf, err := grub.Read(grub.ConfigPath)
-	if err != nil {
-		return err
-	}
-
-	if conf == nil {
-		return nil
-	}
-
-	bootEntry, err := grub.ParseBootLabel(label)
-	if err != nil {
-		return err
-	}
-
-	conf.Default = bootEntry
-	if err = conf.Write(grub.ConfigPath); err != nil {
-		return err
-	}
-
-	m.LegacyADV.DeleteTag(adv.Upgrade)
-
-	return m.Write()
-}
diff --git a/internal/app/machined/pkg/runtime/v1alpha1/v1alpha1_sequencer.go b/internal/app/machined/pkg/runtime/v1alpha1/v1alpha1_sequencer.go
index 1d7a632ce..71ced0fe5 100644
--- a/internal/app/machined/pkg/runtime/v1alpha1/v1alpha1_sequencer.go
+++ b/internal/app/machined/pkg/runtime/v1alpha1/v1alpha1_sequencer.go
@@ -109,6 +109,9 @@ func (*Sequencer) Initialize(r runtime.Runtime) []runtime.Phase {
 			"earlyServices",
 			StartUdevd,
 			StartMachined,
+		).Append(
+			"meta",
+			ReloadMeta,
 		).AppendWithDeferredCheck(
 			func() bool {
 				disabledStr := procfs.ProcCmdline().Get(constants.KernelParamDashboardDisabled).First()
@@ -168,6 +171,12 @@ func (*Sequencer) Install(r runtime.Runtime) []runtime.Phase {
 			).Append(
 				"install",
 				Install,
+			).Append(
+				"meta",
+				ReloadMeta,
+			).Append(
+				"saveMeta", // saving META here to merge in-memory changes with the on-disk ones from the installer
+				FlushMeta,
 			).Append(
 				"saveStateEncryptionConfig",
 				SaveStateEncryptionConfig,
@@ -455,6 +464,9 @@ func (*Sequencer) MaintenanceUpgrade(r runtime.Runtime, _ *machineapi.UpgradeReq
 		).Append(
 			"upgrade",
 			Upgrade,
+		).Append(
+			"meta",
+			ReloadMeta,
 		).Append(
 			"mountBoot",
 			MountBootPartition,
@@ -526,6 +538,9 @@ func (*Sequencer) Upgrade(r runtime.Runtime, in *machineapi.UpgradeRequest) []ru
 		).Append(
 			"upgrade",
 			Upgrade,
+		).Append(
+			"meta",
+			ReloadMeta,
 		).Append(
 			"mountBoot",
 			MountBootPartition,
diff --git a/internal/app/machined/pkg/runtime/v1alpha1/v1alpha1_sequencer_tasks.go b/internal/app/machined/pkg/runtime/v1alpha1/v1alpha1_sequencer_tasks.go
index c6fff0dc9..6f4e4a862 100644
--- a/internal/app/machined/pkg/runtime/v1alpha1/v1alpha1_sequencer_tasks.go
+++ b/internal/app/machined/pkg/runtime/v1alpha1/v1alpha1_sequencer_tasks.go
@@ -46,8 +46,6 @@ import (
 
 	installer "github.com/siderolabs/talos/cmd/installer/pkg/install"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime"
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader"
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader/grub"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/platform"
 	perrors "github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/platform/errors"
@@ -59,6 +57,7 @@ import (
 	"github.com/siderolabs/talos/internal/pkg/cri"
 	"github.com/siderolabs/talos/internal/pkg/etcd"
 	"github.com/siderolabs/talos/internal/pkg/install"
+	"github.com/siderolabs/talos/internal/pkg/meta"
 	"github.com/siderolabs/talos/internal/pkg/mount"
 	"github.com/siderolabs/talos/internal/pkg/partition"
 	"github.com/siderolabs/talos/pkg/conditions"
@@ -1954,17 +1953,15 @@ func LabelNodeAsControlPlane(runtime.Sequence, any) (runtime.TaskExecutionFunc,
 // UpdateBootloader represents the UpdateBootloader task.
 func UpdateBootloader(runtime.Sequence, any) (runtime.TaskExecutionFunc, string) {
 	return func(ctx context.Context, logger *log.Logger, r runtime.Runtime) (err error) {
-		meta, err := bootloader.NewMeta()
+		ok, err := r.State().Machine().Meta().DeleteTag(ctx, meta.Upgrade)
 		if err != nil {
 			return err
 		}
-		//nolint:errcheck
-		defer meta.Close()
 
-		if ok := meta.LegacyADV.DeleteTag(adv.Upgrade); ok {
+		if ok {
 			logger.Println("removing fallback")
 
-			if err = meta.Write(); err != nil {
+			if err = r.State().Machine().Meta().Flush(); err != nil {
 				return err
 			}
 		}
@@ -2031,24 +2028,22 @@ func SaveStateEncryptionConfig(runtime.Sequence, any) (runtime.TaskExecutionFunc
 			return nil
 		}
 
-		meta, err := bootloader.NewMeta()
-		if err != nil {
-			return err
-		}
-		//nolint:errcheck
-		defer meta.Close()
-
 		var data []byte
 
 		if data, err = json.Marshal(encryption); err != nil {
 			return err
 		}
 
-		if !meta.ADV.SetTagBytes(adv.StateEncryptionConfig, data) {
+		ok, err := r.State().Machine().Meta().SetTagBytes(ctx, meta.StateEncryptionConfig, data)
+		if err != nil {
+			return err
+		}
+
+		if !ok {
 			return fmt.Errorf("failed to save state encryption config in the META partition")
 		}
 
-		return meta.Write()
+		return r.State().Machine().Meta().Flush()
 	}, "SaveStateEncryptionConfig"
 }
 
@@ -2083,13 +2078,6 @@ func UnmountEFIPartition(runtime.Sequence, any) (runtime.TaskExecutionFunc, stri
 // MountStatePartition mounts the system partition.
 func MountStatePartition(seq runtime.Sequence, _ any) (runtime.TaskExecutionFunc, string) {
 	return func(ctx context.Context, logger *log.Logger, r runtime.Runtime) (err error) {
-		meta, err := bootloader.NewMeta()
-		if err != nil {
-			return err
-		}
-		//nolint:errcheck
-		defer meta.Close()
-
 		flags := mount.SkipIfMounted
 
 		if seq == runtime.SequenceInitialize {
@@ -2109,7 +2097,7 @@ func MountStatePartition(seq runtime.Sequence, _ any) (runtime.TaskExecutionFunc
 		if encryption == nil {
 			var encryptionFromMeta *v1alpha1.EncryptionConfig
 
-			data, ok := meta.ADV.ReadTagBytes(adv.StateEncryptionConfig)
+			data, ok := r.State().Machine().Meta().ReadTagBytes(meta.StateEncryptionConfig)
 			if ok {
 				if err = json.Unmarshal(data, &encryptionFromMeta); err != nil {
 					return err
@@ -2409,6 +2397,25 @@ func CleanupLegacyStaticPodFiles(runtime.Sequence, any) (runtime.TaskExecutionFu
 	}, "cleanupLegacyStaticPodFiles"
 }
 
+// ReloadMeta reloads META partition after disk mount, installer run, etc.
+func ReloadMeta(runtime.Sequence, any) (runtime.TaskExecutionFunc, string) {
+	return func(ctx context.Context, logger *log.Logger, r runtime.Runtime) error {
+		err := r.State().Machine().Meta().Reload(ctx)
+		if err != nil && !os.IsNotExist(err) {
+			return err
+		}
+
+		return nil
+	}, "reloadMeta"
+}
+
+// FlushMeta flushes META partition after install run.
+func FlushMeta(runtime.Sequence, any) (runtime.TaskExecutionFunc, string) {
+	return func(ctx context.Context, logger *log.Logger, r runtime.Runtime) error {
+		return r.State().Machine().Meta().Flush()
+	}, "flushMeta"
+}
+
 func pauseOnFailure(callback func(runtime.Sequence, any) (runtime.TaskExecutionFunc, string),
 	timeout time.Duration,
 ) func(seq runtime.Sequence, data any) (runtime.TaskExecutionFunc, string) {
diff --git a/internal/app/machined/pkg/runtime/v1alpha1/v1alpha1_state.go b/internal/app/machined/pkg/runtime/v1alpha1/v1alpha1_state.go
index d5ca3d44e..ff4f5e807 100644
--- a/internal/app/machined/pkg/runtime/v1alpha1/v1alpha1_state.go
+++ b/internal/app/machined/pkg/runtime/v1alpha1/v1alpha1_state.go
@@ -5,18 +5,21 @@
 package v1alpha1
 
 import (
+	"context"
 	"errors"
+	"log"
 	"os"
+	"sync"
 
+	"github.com/cosi-project/runtime/pkg/state"
 	multierror "github.com/hashicorp/go-multierror"
 	"github.com/siderolabs/go-blockdevice/blockdevice/probe"
 
 	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/disk"
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader"
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/platform"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha2"
+	"github.com/siderolabs/talos/internal/pkg/meta"
 	"github.com/siderolabs/talos/pkg/machinery/constants"
 )
 
@@ -30,10 +33,14 @@ type State struct {
 
 // MachineState represents the machine's state.
 type MachineState struct {
-	platform runtime.Platform
+	platform  runtime.Platform
+	resources state.State
 
 	disks map[string]*probe.ProbedBlockDevice
 
+	meta     *meta.Meta
+	metaOnce sync.Once
+
 	stagedInstall         bool
 	stagedInstallImageRef string
 	stagedInstallOptions  []byte
@@ -53,8 +60,14 @@ func NewState() (s *State, err error) {
 		return nil, err
 	}
 
+	v2State, err := v1alpha2.NewState()
+	if err != nil {
+		return nil, err
+	}
+
 	machine := &MachineState{
-		platform: p,
+		platform:  p,
+		resources: v2State.Resources(),
 	}
 
 	err = machine.probeDisks()
@@ -64,15 +77,8 @@ func NewState() (s *State, err error) {
 		}
 	}
 
-	machine.probeMeta()
-
 	cluster := &ClusterState{}
 
-	v2State, err := v1alpha2.NewState()
-	if err != nil {
-		return nil, err
-	}
-
 	s = &State{
 		platform: p,
 		cluster:  cluster,
@@ -134,30 +140,114 @@ func (s *MachineState) probeDisks(labels ...string) error {
 	return nil
 }
 
-func (s *MachineState) probeMeta() {
+// Meta implements the runtime.MachineState interface.
+func (s *MachineState) Meta() runtime.Meta {
+	// no META in container mode
 	if s.platform.Mode() == runtime.ModeContainer {
-		return
+		return s
 	}
 
-	meta, err := bootloader.NewMeta()
-	if err != nil {
-		// ignore missing meta
-		return
+	var justLoaded bool
+
+	s.metaOnce.Do(func() {
+		var err error
+
+		s.meta, err = meta.New(context.Background(), s.resources)
+		if err != nil {
+			log.Printf("META: failed to load: %s", err)
+		} else {
+			s.probeMeta()
+		}
+
+		justLoaded = true
+	})
+
+	return metaWrapper{
+		MachineState: s,
+		justLoaded:   justLoaded,
+	}
+}
+
+// ReadTag implements the runtime.Meta interface.
+func (s *MachineState) ReadTag(t uint8) (val string, ok bool) {
+	if s.platform.Mode() == runtime.ModeContainer {
+		return "", false
 	}
 
-	defer meta.Close() //nolint:errcheck
+	return s.meta.ReadTag(t)
+}
 
-	stagedInstallImageRef, ok1 := meta.ADV.ReadTag(adv.StagedUpgradeImageRef)
-	stagedInstallOptions, ok2 := meta.ADV.ReadTag(adv.StagedUpgradeInstallOptions)
+// ReadTagBytes implements the runtime.Meta interface.
+func (s *MachineState) ReadTagBytes(t uint8) (val []byte, ok bool) {
+	if s.platform.Mode() == runtime.ModeContainer {
+		return nil, false
+	}
+
+	return s.meta.ReadTagBytes(t)
+}
+
+// SetTag implements the runtime.Meta interface.
+func (s *MachineState) SetTag(ctx context.Context, t uint8, val string) (bool, error) {
+	if s.platform.Mode() == runtime.ModeContainer {
+		return false, nil
+	}
+
+	return s.meta.SetTag(ctx, t, val)
+}
+
+// SetTagBytes implements the runtime.Meta interface.
+func (s *MachineState) SetTagBytes(ctx context.Context, t uint8, val []byte) (bool, error) {
+	if s.platform.Mode() == runtime.ModeContainer {
+		return false, nil
+	}
+
+	return s.meta.SetTagBytes(ctx, t, val)
+}
+
+// DeleteTag implements the runtime.Meta interface.
+func (s *MachineState) DeleteTag(ctx context.Context, t uint8) (bool, error) {
+	if s.platform.Mode() == runtime.ModeContainer {
+		return false, nil
+	}
+
+	return s.meta.DeleteTag(ctx, t)
+}
+
+// Reload implements the runtime.Meta interface.
+func (s *MachineState) Reload(ctx context.Context) error {
+	if s.platform.Mode() == runtime.ModeContainer {
+		return nil
+	}
+
+	err := s.meta.Reload(ctx)
+	if err == nil {
+		s.probeMeta()
+	}
+
+	return err
+}
+
+// Flush implements the runtime.Meta interface.
+func (s *MachineState) Flush() error {
+	if s.platform.Mode() == runtime.ModeContainer {
+		return nil
+	}
+
+	return s.meta.Flush()
+}
+
+func (s *MachineState) probeMeta() {
+	stagedInstallImageRef, ok1 := s.meta.ReadTag(meta.StagedUpgradeImageRef)
+	stagedInstallOptions, ok2 := s.meta.ReadTag(meta.StagedUpgradeInstallOptions)
 
 	s.stagedInstall = ok1 && ok2
 
 	if s.stagedInstall {
 		// clear the staged install flags
-		meta.ADV.DeleteTag(adv.StagedUpgradeImageRef)
-		meta.ADV.DeleteTag(adv.StagedUpgradeInstallOptions)
+		_, err1 := s.meta.DeleteTag(context.Background(), meta.StagedUpgradeImageRef)
+		_, err2 := s.meta.DeleteTag(context.Background(), meta.StagedUpgradeInstallOptions)
 
-		if err = meta.Write(); err != nil {
+		if err := s.meta.Flush(); err != nil || err1 != nil || err2 != nil {
 			// failed to delete staged install tags, clear the stagedInstall to prevent boot looping
 			s.stagedInstall = false
 		}
@@ -236,3 +326,16 @@ func (s *MachineState) IsKexecPrepared() bool {
 func (s *MachineState) DBus() runtime.DBusState {
 	return &s.dbus
 }
+
+type metaWrapper struct {
+	*MachineState
+	justLoaded bool
+}
+
+func (m metaWrapper) Reload(ctx context.Context) error {
+	if m.justLoaded {
+		return nil
+	}
+
+	return m.MachineState.Reload(ctx)
+}
diff --git a/internal/app/machined/pkg/runtime/v1alpha2/v1alpha2_state.go b/internal/app/machined/pkg/runtime/v1alpha2/v1alpha2_state.go
index 9aa33b484..5d12d3ffe 100644
--- a/internal/app/machined/pkg/runtime/v1alpha2/v1alpha2_state.go
+++ b/internal/app/machined/pkg/runtime/v1alpha2/v1alpha2_state.go
@@ -165,6 +165,7 @@ func NewState() (*State, error) {
 		&runtime.KernelParamDefaultSpec{},
 		&runtime.KernelParamStatus{},
 		&runtime.MachineStatus{},
+		&runtime.MetaKey{},
 		&runtime.MountStatus{},
 		&runtime.PlatformMetadata{},
 		&secrets.API{},
diff --git a/internal/app/machined/pkg/system/services/etcd.go b/internal/app/machined/pkg/system/services/etcd.go
index 1562dbf93..60c7c322f 100644
--- a/internal/app/machined/pkg/system/services/etcd.go
+++ b/internal/app/machined/pkg/system/services/etcd.go
@@ -30,8 +30,6 @@ import (
 	snapshot "go.etcd.io/etcd/etcdutl/v3/snapshot"
 
 	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime"
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader"
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/system"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/system/events"
 	"github.com/siderolabs/talos/internal/app/machined/pkg/system/health"
@@ -40,6 +38,7 @@ import (
 	"github.com/siderolabs/talos/internal/app/machined/pkg/system/runner/restart"
 	"github.com/siderolabs/talos/internal/pkg/containers/image"
 	"github.com/siderolabs/talos/internal/pkg/etcd"
+	"github.com/siderolabs/talos/internal/pkg/meta"
 	"github.com/siderolabs/talos/pkg/argsbuilder"
 	"github.com/siderolabs/talos/pkg/conditions"
 	"github.com/siderolabs/talos/pkg/filetree"
@@ -377,20 +376,7 @@ func buildInitialCluster(ctx context.Context, r runtime.Runtime, name string, pe
 func (e *Etcd) argsForInit(ctx context.Context, r runtime.Runtime, spec *etcdresource.SpecSpec) error {
 	var upgraded bool
 
-	if r.State().Platform().Mode() != runtime.ModeContainer {
-		var (
-			meta *bootloader.Meta
-			err  error
-		)
-
-		if meta, err = bootloader.NewMeta(); err != nil {
-			return err
-		}
-		//nolint:errcheck
-		defer meta.Close()
-
-		_, upgraded = meta.LegacyADV.ReadTag(adv.Upgrade)
-	}
+	_, upgraded = r.State().Machine().Meta().ReadTag(meta.Upgrade)
 
 	denyListArgs := argsbuilder.Args{
 		"name":                               spec.Name,
diff --git a/internal/app/machined/revert.go b/internal/app/machined/revert.go
new file mode 100644
index 000000000..5ee886357
--- /dev/null
+++ b/internal/app/machined/revert.go
@@ -0,0 +1,114 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package main
+
+import (
+	"context"
+	"log"
+	"os"
+
+	"github.com/siderolabs/go-blockdevice/blockdevice/probe"
+
+	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader/grub"
+	"github.com/siderolabs/talos/internal/pkg/meta"
+	"github.com/siderolabs/talos/internal/pkg/mount"
+	"github.com/siderolabs/talos/pkg/machinery/constants"
+)
+
+func revertBootloader() {
+	if err := revertBootloadInternal(); err != nil {
+		log.Printf("failed to revert bootloader: %s", err)
+	}
+}
+
+//nolint:gocyclo
+func revertBootloadInternal() error {
+	metaState, err := meta.New(context.Background(), nil)
+	if err != nil {
+		if os.IsNotExist(err) {
+			// no META, no way to revert
+			return nil
+		}
+
+		return err
+	}
+
+	label, ok := metaState.ReadTag(meta.Upgrade)
+	if !ok {
+		return nil
+	}
+
+	if label == "" {
+		if _, err = metaState.DeleteTag(context.Background(), meta.Upgrade); err != nil {
+			return err
+		}
+
+		return metaState.Flush()
+	}
+
+	log.Printf("reverting failed upgrade, switching to %q", label)
+
+	// attempt to mount BOOT partition directly without using other code paths, as they rely on Runtime
+	dev, err := probe.GetDevWithPartitionName(constants.BootPartitionLabel)
+	if os.IsNotExist(err) {
+		// no BOOT partition???
+		return nil
+	}
+
+	if err != nil {
+		return err
+	}
+
+	defer dev.Close() //nolint:errcheck
+
+	mp, err := mount.SystemMountPointForLabel(dev.BlockDevice, constants.BootPartitionLabel)
+	if err != nil {
+		return err
+	}
+
+	if mp == nil {
+		return nil
+	}
+
+	alreadyMounted, err := mp.IsMounted()
+	if err != nil {
+		return err
+	}
+
+	if !alreadyMounted {
+		if err = mp.Mount(); err != nil {
+			return err
+		}
+
+		defer mp.Unmount() //nolint:errcheck
+	}
+
+	conf, err := grub.Read(grub.ConfigPath)
+	if err != nil {
+		return err
+	}
+
+	if conf == nil {
+		return nil
+	}
+
+	bootEntry, err := grub.ParseBootLabel(label)
+	if err != nil {
+		return err
+	}
+
+	if conf.Default != bootEntry {
+		conf.Default, conf.Fallback = bootEntry, conf.Default
+		if err = conf.Write(grub.ConfigPath); err != nil {
+			return err
+		}
+	}
+
+	if _, err = metaState.DeleteTag(context.Background(), meta.Upgrade); err != nil {
+		return err
+	}
+
+	return metaState.Flush()
+}
diff --git a/internal/pkg/meta/constants.go b/internal/pkg/meta/constants.go
new file mode 100644
index 000000000..171896588
--- /dev/null
+++ b/internal/pkg/meta/constants.go
@@ -0,0 +1,16 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package meta
+
+const (
+	// Upgrade is the upgrade tag.
+	Upgrade = iota + 6
+	// StagedUpgradeImageRef stores image reference for staged upgrade.
+	StagedUpgradeImageRef
+	// StagedUpgradeInstallOptions stores JSON-serialized install.Options.
+	StagedUpgradeInstallOptions
+	// StateEncryptionConfig stores JSON-serialized v1alpha1.Encryption.
+	StateEncryptionConfig
+)
diff --git a/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/adv.go b/internal/pkg/meta/internal/adv/adv.go
similarity index 64%
rename from internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/adv.go
rename to internal/pkg/meta/internal/adv/adv.go
index aa22a8751..39a3644b2 100644
--- a/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/adv.go
+++ b/internal/pkg/meta/internal/adv/adv.go
@@ -12,28 +12,19 @@ type ADV interface {
 	SetTag(t uint8, val string) (ok bool)
 	SetTagBytes(t uint8, val []byte) (ok bool)
 	DeleteTag(t uint8) (ok bool)
+	ListTags() (tags []uint8)
 	Bytes() ([]byte, error)
 }
 
 const (
 	// End is the noop tag.
 	End = iota
-	// Bootonce is the bootonce tag.
-	Bootonce
-	// Menusave is the menusave tag.
-	Menusave
+	_
+	_
 	// Reserved1 is a reserved tag.
 	Reserved1
 	// Reserved2 is a reserved tag.
 	Reserved2
 	// Reserved3 is a reserved tag.
 	Reserved3
-	// Upgrade is the upgrade tag.
-	Upgrade
-	// StagedUpgradeImageRef stores image reference for staged upgrade.
-	StagedUpgradeImageRef
-	// StagedUpgradeInstallOptions stores JSON-serialized install.Options.
-	StagedUpgradeInstallOptions
-	// StateEncryptionConfig stores JSON-serialized v1alpha1.Encryption.
-	StateEncryptionConfig
 )
diff --git a/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/syslinux/syslinux.go b/internal/pkg/meta/internal/adv/syslinux/syslinux.go
similarity index 88%
rename from internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/syslinux/syslinux.go
rename to internal/pkg/meta/internal/adv/syslinux/syslinux.go
index 8947d8a1d..d631e8587 100644
--- a/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/syslinux/syslinux.go
+++ b/internal/pkg/meta/internal/adv/syslinux/syslinux.go
@@ -9,7 +9,7 @@ import (
 	"encoding/binary"
 	"io"
 
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv"
+	"github.com/siderolabs/talos/internal/pkg/meta/internal/adv"
 )
 
 const (
@@ -30,13 +30,17 @@ type ADV []byte
 
 // NewADV returns the Auxiliary Data Vector.
 func NewADV(r io.ReadSeeker) (adv ADV, err error) {
+	b := make([]byte, 2*AdvSize)
+
+	if r == nil {
+		return b, nil
+	}
+
 	_, err = r.Seek(-2*AdvSize, io.SeekEnd)
 	if err != nil {
 		return nil, err
 	}
 
-	b := make([]byte, 2*AdvSize)
-
 	_, err = io.ReadFull(r, b)
 	if err != nil {
 		return nil, err
@@ -90,6 +94,31 @@ func (a ADV) ReadTagBytes(t uint8) (val []byte, ok bool) {
 	return val, ok
 }
 
+// ListTags returns a list of tags in the ADV.
+func (a ADV) ListTags() []uint8 {
+	// Header is in first 8 bytes.
+	i := 8
+
+	var tags []uint8
+
+	// End at tail plus two bytes required for successful next tag.
+	for i < AdvSize-4-2 {
+		tag := a[i]
+		size := int(a[i+1])
+
+		if tag == adv.End {
+			break
+		}
+
+		tags = append(tags, tag)
+
+		// Jump to the next tag.
+		i += 2 + size
+	}
+
+	return tags
+}
+
 // SetTag sets a tag in the ADV.
 func (a ADV) SetTag(t uint8, val string) bool {
 	return a.SetTagBytes(t, []byte(val))
diff --git a/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/syslinux/syslinux_test.go b/internal/pkg/meta/internal/adv/syslinux/syslinux_test.go
similarity index 99%
rename from internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/syslinux/syslinux_test.go
rename to internal/pkg/meta/internal/adv/syslinux/syslinux_test.go
index 4e3441c60..303f8a261 100644
--- a/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/syslinux/syslinux_test.go
+++ b/internal/pkg/meta/internal/adv/syslinux/syslinux_test.go
@@ -11,8 +11,6 @@ import (
 	"os"
 	"reflect"
 	"testing"
-
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv"
 )
 
 func TestNewADV(t *testing.T) {
@@ -78,7 +76,7 @@ func TestADV_ReadTag(t *testing.T) {
 			name: "bootonce",
 			a:    ADV{165, 47, 45, 90, 142, 155, 111, 208, 1, 7, 116, 101, 115, 116, 32, 109, 101, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221, 165, 47, 45, 90, 142, 155, 111, 208, 1, 7, 116, 101, 115, 116, 32, 109, 101, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221},
 			args: args{
-				t: adv.Bootonce,
+				t: 1,
 			},
 			wantVal: "test me",
 			wantOk:  true,
@@ -97,6 +95,11 @@ func TestADV_ReadTag(t *testing.T) {
 			if gotOk != tt.wantOk {
 				t.Errorf("ADV.ReadTag() gotOk = %v, want %v", gotOk, tt.wantOk)
 			}
+
+			tags := tt.a.ListTags()
+			if !reflect.DeepEqual(tags, []uint8{tt.args.t}) {
+				t.Errorf("ADV.ListTags() got = %v, want %v", tags, []uint8{tt.args.t})
+			}
 		})
 	}
 }
@@ -118,7 +121,7 @@ func TestADV_SetTag(t *testing.T) {
 			name: "set test me",
 			a:    ADV{165, 47, 45, 90, 103, 23, 4, 163, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221, 165, 47, 45, 90, 103, 23, 4, 163, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221},
 			args: args{
-				t:   adv.Bootonce,
+				t:   1,
 				val: "test me",
 			},
 			wantADV: ADV{165, 47, 45, 90, 142, 155, 111, 208, 1, 7, 116, 101, 115, 116, 32, 109, 101, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221, 165, 47, 45, 90, 142, 155, 111, 208, 1, 7, 116, 101, 115, 116, 32, 109, 101, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221},
@@ -128,7 +131,7 @@ func TestADV_SetTag(t *testing.T) {
 			name: "set test",
 			a:    ADV{165, 47, 45, 90, 142, 155, 111, 208, 1, 7, 116, 101, 115, 116, 32, 109, 101, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221, 165, 47, 45, 90, 142, 155, 111, 208, 1, 7, 116, 101, 115, 116, 32, 109, 101, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221},
 			args: args{
-				t:   adv.Upgrade,
+				t:   6,
 				val: "add test",
 			},
 			wantADV: ADV{165, 47, 45, 90, 197, 189, 210, 250, 1, 7, 116, 101, 115, 116, 32, 109, 101, 6, 8, 97, 100, 100, 32, 116, 101, 115, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221, 165, 47, 45, 90, 197, 189, 210, 250, 1, 7, 116, 101, 115, 116, 32, 109, 101, 6, 8, 97, 100, 100, 32, 116, 101, 115, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221},
@@ -170,7 +173,7 @@ func TestADV_DeleteTag(t *testing.T) {
 			name: "delete test me",
 			a:    ADV{165, 47, 45, 90, 142, 155, 111, 208, 1, 7, 116, 101, 115, 116, 32, 109, 101, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221, 165, 47, 45, 90, 142, 155, 111, 208, 1, 7, 116, 101, 115, 116, 32, 109, 101, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221},
 			args: args{
-				t: adv.Bootonce,
+				t: 1,
 			},
 			wantADV: ADV{165, 47, 45, 90, 103, 23, 4, 163, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221, 165, 47, 45, 90, 103, 23, 4, 163, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221},
 			wantOk:  true,
@@ -179,7 +182,7 @@ func TestADV_DeleteTag(t *testing.T) {
 			name: "delete test",
 			a:    ADV{165, 47, 45, 90, 185, 209, 145, 51, 1, 7, 116, 101, 115, 116, 32, 109, 101, 6, 8, 97, 100, 100, 32, 116, 101, 115, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221, 165, 47, 45, 90, 185, 209, 145, 51, 1, 7, 116, 101, 115, 116, 32, 109, 101, 6, 8, 97, 100, 100, 32, 116, 101, 115, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221},
 			args: args{
-				t: adv.Upgrade,
+				t: 6,
 			},
 			wantADV: ADV{165, 47, 45, 90, 142, 155, 111, 208, 1, 7, 116, 101, 115, 116, 32, 109, 101, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221, 165, 47, 45, 90, 142, 155, 111, 208, 1, 7, 116, 101, 115, 116, 32, 109, 101, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221},
 			wantOk:  true,
@@ -188,7 +191,7 @@ func TestADV_DeleteTag(t *testing.T) {
 			name: "delete test again",
 			a:    ADV{165, 47, 45, 90, 142, 155, 111, 208, 1, 7, 116, 101, 115, 116, 32, 109, 101, 6, 8, 97, 100, 100, 32, 116, 101, 115, 116, 6, 8, 97, 100, 100, 32, 116, 101, 115, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221, 165, 47, 45, 90, 142, 155, 111, 208, 1, 7, 116, 101, 115, 116, 32, 109, 101, 6, 8, 97, 100, 100, 32, 116, 101, 115, 116, 6, 8, 97, 100, 100, 32, 116, 101, 115, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221},
 			args: args{
-				t: adv.Upgrade,
+				t: 6,
 			},
 			wantADV: ADV{165, 47, 45, 90, 197, 189, 210, 250, 1, 7, 116, 101, 115, 116, 32, 109, 101, 6, 8, 97, 100, 100, 32, 116, 101, 115, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221, 165, 47, 45, 90, 197, 189, 210, 250, 1, 7, 116, 101, 115, 116, 32, 109, 101, 6, 8, 97, 100, 100, 32, 116, 101, 115, 116, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 100, 191, 40, 221},
 			wantOk:  true,
@@ -334,7 +337,7 @@ func TestADV_overwrite(t *testing.T) {
 	}
 
 	for i := 0; i < 1024; i++ {
-		if !a.SetTag(adv.Bootonce, "yes") {
+		if !a.SetTag(1, "yes") {
 			t.Errorf("SetTag() failed")
 		}
 	}
diff --git a/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/syslinux/testdata/adv.sys b/internal/pkg/meta/internal/adv/syslinux/testdata/adv.sys
similarity index 100%
rename from internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/syslinux/testdata/adv.sys
rename to internal/pkg/meta/internal/adv/syslinux/testdata/adv.sys
diff --git a/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/talos/talos.go b/internal/pkg/meta/internal/adv/talos/talos.go
similarity index 93%
rename from internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/talos/talos.go
rename to internal/pkg/meta/internal/adv/talos/talos.go
index 613c85a94..31ac60dbc 100644
--- a/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/talos/talos.go
+++ b/internal/pkg/meta/internal/adv/talos/talos.go
@@ -12,7 +12,10 @@ import (
 	"fmt"
 	"io"
 
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv"
+	"github.com/siderolabs/gen/maps"
+	"github.com/siderolabs/gen/slices"
+
+	"github.com/siderolabs/talos/internal/pkg/meta/internal/adv"
 )
 
 // Basic constants configuring the ADV.
@@ -59,6 +62,10 @@ func NewADV(r io.Reader) (*ADV, error) {
 		Tags: make(map[Tag]Value),
 	}
 
+	if r == nil {
+		return a, nil
+	}
+
 	buf := make([]byte, Length)
 
 	_, err := io.ReadFull(r, buf)
@@ -181,6 +188,11 @@ func (a *ADV) ReadTagBytes(t uint8) (val []byte, ok bool) {
 	return
 }
 
+// ListTags to get list of tags.
+func (a *ADV) ListTags() (tags []uint8) {
+	return slices.Map(maps.Keys(a.Tags), func(t Tag) uint8 { return uint8(t) })
+}
+
 // SetTag to set tag value.
 func (a *ADV) SetTag(t uint8, val string) (ok bool) {
 	return a.SetTagBytes(t, []byte(val))
diff --git a/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/talos/talos_test.go b/internal/pkg/meta/internal/adv/talos/talos_test.go
similarity index 83%
rename from internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/talos/talos_test.go
rename to internal/pkg/meta/internal/adv/talos/talos_test.go
index fe1667290..7444845f4 100644
--- a/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/talos/talos_test.go
+++ b/internal/pkg/meta/internal/adv/talos/talos_test.go
@@ -6,13 +6,14 @@ package talos_test
 
 import (
 	"bytes"
+	"sort"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv"
-	"github.com/siderolabs/talos/internal/app/machined/pkg/runtime/v1alpha1/bootloader/adv/talos"
+	"github.com/siderolabs/talos/internal/pkg/meta/internal/adv"
+	"github.com/siderolabs/talos/internal/pkg/meta/internal/adv/talos"
 )
 
 func TestMarshalUnmarshal(t *testing.T) {
@@ -82,5 +83,9 @@ func TestMarshalUnmarshal(t *testing.T) {
 		val, ok = a.ReadTag(adv.Reserved3)
 		assert.True(t, ok)
 		assert.Equal(t, val3, val)
+
+		tags := a.ListTags()
+		sort.Slice(tags, func(i, j int) bool { return tags[i] < tags[j] })
+		assert.Equal(t, []uint8{adv.Reserved1, adv.Reserved2, adv.Reserved3}, tags)
 	}
 }
diff --git a/internal/pkg/meta/meta.go b/internal/pkg/meta/meta.go
new file mode 100644
index 000000000..08d1a690b
--- /dev/null
+++ b/internal/pkg/meta/meta.go
@@ -0,0 +1,341 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+// Package meta provides access to META partition: key-value partition persisted across reboots.
+package meta
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"log"
+	"os"
+	"sync"
+
+	"github.com/cosi-project/runtime/pkg/resource"
+	"github.com/cosi-project/runtime/pkg/safe"
+	"github.com/cosi-project/runtime/pkg/state"
+	"github.com/siderolabs/go-blockdevice/blockdevice/probe"
+
+	"github.com/siderolabs/talos/internal/pkg/meta/internal/adv"
+	"github.com/siderolabs/talos/internal/pkg/meta/internal/adv/syslinux"
+	"github.com/siderolabs/talos/internal/pkg/meta/internal/adv/talos"
+	"github.com/siderolabs/talos/pkg/machinery/constants"
+	"github.com/siderolabs/talos/pkg/machinery/resources/runtime"
+)
+
+// Meta represents the META reader/writer.
+//
+// Meta abstracts away all details about loading/storing the metadata providing an easy to use interface.
+type Meta struct {
+	mu sync.Mutex
+
+	legacy adv.ADV
+	talos  adv.ADV
+	state  state.State
+	opts   Options
+}
+
+// Options configures the META.
+type Options struct {
+	fixedPath string
+}
+
+// Option is a functional option.
+type Option func(*Options)
+
+// WithFixedPath sets the fixed path to META partition.
+func WithFixedPath(path string) Option {
+	return func(o *Options) {
+		o.fixedPath = path
+	}
+}
+
+// New initializes empty META, trying to probe the existing META first.
+func New(ctx context.Context, st state.State, opts ...Option) (*Meta, error) {
+	meta := &Meta{
+		state: st,
+	}
+
+	for _, opt := range opts {
+		opt(&meta.opts)
+	}
+
+	var err error
+
+	meta.legacy, err = syslinux.NewADV(nil)
+	if err != nil {
+		return nil, err
+	}
+
+	meta.talos, err = talos.NewADV(nil)
+	if err != nil {
+		return nil, err
+	}
+
+	err = meta.Reload(ctx)
+	if err != nil && !os.IsNotExist(err) {
+		return meta, err
+	}
+
+	return meta, nil
+}
+
+func (meta *Meta) getPath() (string, error) {
+	if meta.opts.fixedPath != "" {
+		return meta.opts.fixedPath, nil
+	}
+
+	dev, err := probe.GetDevWithPartitionName(constants.MetaPartitionLabel)
+	if err != nil {
+		return "", err
+	}
+
+	defer dev.Close() //nolint:errcheck
+
+	return dev.PartPath(constants.MetaPartitionLabel)
+}
+
+// Reload refreshes the META from the disk.
+func (meta *Meta) Reload(ctx context.Context) error {
+	meta.mu.Lock()
+	defer meta.mu.Unlock()
+
+	path, err := meta.getPath()
+	if err != nil {
+		return err
+	}
+
+	f, err := os.Open(path)
+	if err != nil {
+		return err
+	}
+
+	defer f.Close() //nolint:errcheck
+
+	adv, err := talos.NewADV(f)
+	if adv == nil && err != nil {
+		// if adv is not nil, but err is nil, it might be missing ADV, ignore it
+		return err
+	}
+
+	legacyAdv, err := syslinux.NewADV(f)
+	if err != nil {
+		return err
+	}
+
+	// copy values from in-memory to on-disk version
+	for _, t := range meta.talos.ListTags() {
+		val, _ := meta.talos.ReadTagBytes(t)
+		adv.SetTagBytes(t, val)
+	}
+
+	log.Printf("META: loaded %d keys", len(adv.ListTags()))
+
+	meta.talos = adv
+	meta.legacy = legacyAdv
+
+	return meta.syncState(ctx)
+}
+
+// syncState sync resources with adv contents.
+func (meta *Meta) syncState(ctx context.Context) error {
+	if meta.state == nil {
+		return nil
+	}
+
+	existingTags := make(map[resource.ID]struct{})
+
+	for _, t := range meta.talos.ListTags() {
+		existingTags[tagToID(t)] = struct{}{}
+		val, _ := meta.talos.ReadTag(t)
+
+		if err := updateTagResource(ctx, meta.state, t, val); err != nil {
+			return err
+		}
+	}
+
+	items, err := meta.state.List(ctx, runtime.NewMetaKey(runtime.NamespaceName, "").Metadata())
+	if err != nil {
+		return err
+	}
+
+	for _, item := range items.Items {
+		if _, exists := existingTags[item.Metadata().ID()]; exists {
+			continue
+		}
+
+		if err = meta.state.Destroy(ctx, item.Metadata()); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// Flush writes the META to the disk.
+func (meta *Meta) Flush() error {
+	meta.mu.Lock()
+	defer meta.mu.Unlock()
+
+	path, err := meta.getPath()
+	if err != nil {
+		return err
+	}
+
+	f, err := os.OpenFile(path, os.O_RDWR, 0)
+	if err != nil {
+		return err
+	}
+
+	defer f.Close() //nolint:errcheck
+
+	serialized, err := meta.talos.Bytes()
+	if err != nil {
+		return err
+	}
+
+	n, err := f.WriteAt(serialized, 0)
+	if err != nil {
+		return err
+	}
+
+	if n != len(serialized) {
+		return fmt.Errorf("expected to write %d bytes, wrote %d", len(serialized), n)
+	}
+
+	serialized, err = meta.legacy.Bytes()
+	if err != nil {
+		return err
+	}
+
+	offset, err := f.Seek(-int64(len(serialized)), io.SeekEnd)
+	if err != nil {
+		return err
+	}
+
+	n, err = f.WriteAt(serialized, offset)
+	if err != nil {
+		return err
+	}
+
+	if n != len(serialized) {
+		return fmt.Errorf("expected to write %d bytes, wrote %d", len(serialized), n)
+	}
+
+	log.Printf("META: saved %d keys", len(meta.talos.ListTags()))
+
+	return f.Sync()
+}
+
+// ReadTag reads a tag from the META.
+func (meta *Meta) ReadTag(t uint8) (val string, ok bool) {
+	meta.mu.Lock()
+	defer meta.mu.Unlock()
+
+	val, ok = meta.talos.ReadTag(t)
+	if !ok {
+		val, ok = meta.legacy.ReadTag(t)
+	}
+
+	return val, ok
+}
+
+// ReadTagBytes reads a tag from the META.
+func (meta *Meta) ReadTagBytes(t uint8) (val []byte, ok bool) {
+	meta.mu.Lock()
+	defer meta.mu.Unlock()
+
+	val, ok = meta.talos.ReadTagBytes(t)
+	if !ok {
+		val, ok = meta.legacy.ReadTagBytes(t)
+	}
+
+	return val, ok
+}
+
+// SetTag writes a tag to the META.
+func (meta *Meta) SetTag(ctx context.Context, t uint8, val string) (bool, error) {
+	meta.mu.Lock()
+	defer meta.mu.Unlock()
+
+	ok := meta.talos.SetTag(t, val)
+
+	if ok {
+		err := updateTagResource(ctx, meta.state, t, val)
+		if err != nil {
+			return false, err
+		}
+	}
+
+	return ok, nil
+}
+
+// SetTagBytes writes a tag to the META.
+func (meta *Meta) SetTagBytes(ctx context.Context, t uint8, val []byte) (bool, error) {
+	meta.mu.Lock()
+	defer meta.mu.Unlock()
+
+	ok := meta.talos.SetTagBytes(t, val)
+
+	if ok {
+		err := updateTagResource(ctx, meta.state, t, string(val))
+		if err != nil {
+			return false, err
+		}
+	}
+
+	return ok, nil
+}
+
+// DeleteTag deletes a tag from the META.
+func (meta *Meta) DeleteTag(ctx context.Context, t uint8) (bool, error) {
+	meta.mu.Lock()
+	defer meta.mu.Unlock()
+
+	ok := meta.talos.DeleteTag(t)
+	if !ok {
+		ok = meta.legacy.DeleteTag(t)
+	}
+
+	if meta.state == nil {
+		return ok, nil
+	}
+
+	err := meta.state.Destroy(ctx, runtime.NewMetaKey(runtime.NamespaceName, tagToID(t)).Metadata()) //nolint:errcheck
+	if state.IsNotFoundError(err) {
+		err = nil
+	}
+
+	return ok, err
+}
+
+func tagToID(t uint8) resource.ID {
+	return fmt.Sprintf("0x%02x", t)
+}
+
+func updateTagResource(ctx context.Context, st state.State, t uint8, val string) error {
+	if st == nil {
+		return nil
+	}
+
+	_, err := safe.StateUpdateWithConflicts(ctx, st, runtime.NewMetaKey(runtime.NamespaceName, tagToID(t)).Metadata(), func(r *runtime.MetaKey) error {
+		r.TypedSpec().Value = val
+
+		return nil
+	})
+
+	if err == nil {
+		return nil
+	}
+
+	if state.IsNotFoundError(err) {
+		r := runtime.NewMetaKey(runtime.NamespaceName, tagToID(t))
+		r.TypedSpec().Value = val
+
+		return st.Create(ctx, r)
+	}
+
+	return err
+}
diff --git a/internal/pkg/meta/meta_test.go b/internal/pkg/meta/meta_test.go
new file mode 100644
index 000000000..d258c46bd
--- /dev/null
+++ b/internal/pkg/meta/meta_test.go
@@ -0,0 +1,98 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+// Package meta provides access to META partition: key-value partition persisted across reboots.
+package meta_test
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+	"testing"
+
+	"github.com/cosi-project/runtime/pkg/safe"
+	"github.com/cosi-project/runtime/pkg/state"
+	"github.com/cosi-project/runtime/pkg/state/impl/inmem"
+	"github.com/cosi-project/runtime/pkg/state/impl/namespaced"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"github.com/siderolabs/talos/internal/pkg/meta"
+	"github.com/siderolabs/talos/pkg/machinery/resources/runtime"
+)
+
+func setupTest(t *testing.T) (*meta.Meta, string, state.State) {
+	t.Helper()
+
+	tmpDir := t.TempDir()
+
+	path := filepath.Join(tmpDir, "meta")
+
+	f, err := os.Create(path)
+	require.NoError(t, err)
+
+	require.NoError(t, f.Truncate(1024*1024))
+
+	require.NoError(t, f.Close())
+
+	st := state.WrapCore(namespaced.NewState(inmem.Build))
+
+	m, err := meta.New(context.Background(), st, meta.WithFixedPath(path))
+	require.NoError(t, err)
+
+	return m, path, st
+}
+
+func TestFlow(t *testing.T) {
+	t.Parallel()
+
+	m, path, st := setupTest(t)
+
+	ctx := context.Background()
+
+	ok, err := m.SetTag(ctx, meta.Upgrade, "1.2.3")
+	require.NoError(t, err)
+	assert.True(t, ok)
+
+	val, ok := m.ReadTag(meta.Upgrade)
+	assert.True(t, ok)
+	assert.Equal(t, "1.2.3", val)
+
+	_, ok = m.ReadTag(meta.StagedUpgradeImageRef)
+	assert.False(t, ok)
+
+	ok, err = m.DeleteTag(ctx, meta.Upgrade)
+	require.NoError(t, err)
+	assert.True(t, ok)
+
+	ok, err = m.SetTag(ctx, meta.StagedUpgradeInstallOptions, "install-fast")
+	require.NoError(t, err)
+	assert.True(t, ok)
+
+	assert.NoError(t, m.Flush())
+
+	assert.NoError(t, m.Reload(ctx))
+
+	val, ok = m.ReadTag(meta.StagedUpgradeInstallOptions)
+	assert.True(t, ok)
+	assert.Equal(t, "install-fast", val)
+
+	m2, err := meta.New(ctx, st, meta.WithFixedPath(path))
+	require.NoError(t, err)
+
+	_, ok = m2.ReadTag(meta.Upgrade)
+	assert.False(t, ok)
+
+	val, ok = m2.ReadTag(meta.StagedUpgradeInstallOptions)
+	assert.True(t, ok)
+	assert.Equal(t, "install-fast", val)
+
+	list, err := safe.StateList[*runtime.MetaKey](ctx, st, runtime.NewMetaKey(runtime.NamespaceName, "").Metadata())
+	require.NoError(t, err)
+
+	for iter := safe.IteratorFromList(list); iter.Next(); {
+		assert.Equal(t, "0x08", iter.Value().Metadata().ID())
+		assert.Equal(t, "install-fast", iter.Value().TypedSpec().Value)
+	}
+}
diff --git a/pkg/machinery/api/resource/definitions/runtime/runtime.pb.go b/pkg/machinery/api/resource/definitions/runtime/runtime.pb.go
index 90df98250..ce3857fb9 100644
--- a/pkg/machinery/api/resource/definitions/runtime/runtime.pb.go
+++ b/pkg/machinery/api/resource/definitions/runtime/runtime.pb.go
@@ -311,6 +311,54 @@ func (x *MachineStatusStatus) GetUnmetConditions() []*UnmetCondition {
 	return nil
 }
 
+// MetaKeySpec describes status of the defined sysctls.
+type MetaKeySpec struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Value string `protobuf:"bytes,1,opt,name=value,proto3" json:"value,omitempty"`
+}
+
+func (x *MetaKeySpec) Reset() {
+	*x = MetaKeySpec{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_resource_definitions_runtime_runtime_proto_msgTypes[5]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *MetaKeySpec) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*MetaKeySpec) ProtoMessage() {}
+
+func (x *MetaKeySpec) ProtoReflect() protoreflect.Message {
+	mi := &file_resource_definitions_runtime_runtime_proto_msgTypes[5]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use MetaKeySpec.ProtoReflect.Descriptor instead.
+func (*MetaKeySpec) Descriptor() ([]byte, []int) {
+	return file_resource_definitions_runtime_runtime_proto_rawDescGZIP(), []int{5}
+}
+
+func (x *MetaKeySpec) GetValue() string {
+	if x != nil {
+		return x.Value
+	}
+	return ""
+}
+
 // MountStatusSpec describes status of the defined sysctls.
 type MountStatusSpec struct {
 	state         protoimpl.MessageState
@@ -326,7 +374,7 @@ type MountStatusSpec struct {
 func (x *MountStatusSpec) Reset() {
 	*x = MountStatusSpec{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_resource_definitions_runtime_runtime_proto_msgTypes[5]
+		mi := &file_resource_definitions_runtime_runtime_proto_msgTypes[6]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -339,7 +387,7 @@ func (x *MountStatusSpec) String() string {
 func (*MountStatusSpec) ProtoMessage() {}
 
 func (x *MountStatusSpec) ProtoReflect() protoreflect.Message {
-	mi := &file_resource_definitions_runtime_runtime_proto_msgTypes[5]
+	mi := &file_resource_definitions_runtime_runtime_proto_msgTypes[6]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -352,7 +400,7 @@ func (x *MountStatusSpec) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use MountStatusSpec.ProtoReflect.Descriptor instead.
 func (*MountStatusSpec) Descriptor() ([]byte, []int) {
-	return file_resource_definitions_runtime_runtime_proto_rawDescGZIP(), []int{5}
+	return file_resource_definitions_runtime_runtime_proto_rawDescGZIP(), []int{6}
 }
 
 func (x *MountStatusSpec) GetSource() string {
@@ -402,7 +450,7 @@ type PlatformMetadataSpec struct {
 func (x *PlatformMetadataSpec) Reset() {
 	*x = PlatformMetadataSpec{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_resource_definitions_runtime_runtime_proto_msgTypes[6]
+		mi := &file_resource_definitions_runtime_runtime_proto_msgTypes[7]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -415,7 +463,7 @@ func (x *PlatformMetadataSpec) String() string {
 func (*PlatformMetadataSpec) ProtoMessage() {}
 
 func (x *PlatformMetadataSpec) ProtoReflect() protoreflect.Message {
-	mi := &file_resource_definitions_runtime_runtime_proto_msgTypes[6]
+	mi := &file_resource_definitions_runtime_runtime_proto_msgTypes[7]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -428,7 +476,7 @@ func (x *PlatformMetadataSpec) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use PlatformMetadataSpec.ProtoReflect.Descriptor instead.
 func (*PlatformMetadataSpec) Descriptor() ([]byte, []int) {
-	return file_resource_definitions_runtime_runtime_proto_rawDescGZIP(), []int{6}
+	return file_resource_definitions_runtime_runtime_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *PlatformMetadataSpec) GetPlatform() string {
@@ -500,7 +548,7 @@ type UnmetCondition struct {
 func (x *UnmetCondition) Reset() {
 	*x = UnmetCondition{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_resource_definitions_runtime_runtime_proto_msgTypes[7]
+		mi := &file_resource_definitions_runtime_runtime_proto_msgTypes[8]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -513,7 +561,7 @@ func (x *UnmetCondition) String() string {
 func (*UnmetCondition) ProtoMessage() {}
 
 func (x *UnmetCondition) ProtoReflect() protoreflect.Message {
-	mi := &file_resource_definitions_runtime_runtime_proto_msgTypes[7]
+	mi := &file_resource_definitions_runtime_runtime_proto_msgTypes[8]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -526,7 +574,7 @@ func (x *UnmetCondition) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UnmetCondition.ProtoReflect.Descriptor instead.
 func (*UnmetCondition) Descriptor() ([]byte, []int) {
-	return file_resource_definitions_runtime_runtime_proto_rawDescGZIP(), []int{7}
+	return file_resource_definitions_runtime_runtime_proto_rawDescGZIP(), []int{8}
 }
 
 func (x *UnmetCondition) GetName() string {
@@ -590,40 +638,42 @@ var file_resource_definitions_runtime_runtime_proto_rawDesc = []byte{
 	0x63, 0x65, 0x2e, 0x64, 0x65, 0x66, 0x69, 0x6e, 0x69, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2e, 0x72,
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+	0x61, 0x6d, 0x65, 0x12, 0x16, 0x0a, 0x06, 0x72, 0x65, 0x67, 0x69, 0x6f, 0x6e, 0x18, 0x03, 0x20,
+	0x01, 0x28, 0x09, 0x52, 0x06, 0x72, 0x65, 0x67, 0x69, 0x6f, 0x6e, 0x12, 0x12, 0x0a, 0x04, 0x7a,
+	0x6f, 0x6e, 0x65, 0x18, 0x04, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x7a, 0x6f, 0x6e, 0x65, 0x12,
+	0x23, 0x0a, 0x0d, 0x69, 0x6e, 0x73, 0x74, 0x61, 0x6e, 0x63, 0x65, 0x5f, 0x74, 0x79, 0x70, 0x65,
+	0x18, 0x05, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0c, 0x69, 0x6e, 0x73, 0x74, 0x61, 0x6e, 0x63, 0x65,
+	0x54, 0x79, 0x70, 0x65, 0x12, 0x1f, 0x0a, 0x0b, 0x69, 0x6e, 0x73, 0x74, 0x61, 0x6e, 0x63, 0x65,
+	0x5f, 0x69, 0x64, 0x18, 0x06, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0a, 0x69, 0x6e, 0x73, 0x74, 0x61,
+	0x6e, 0x63, 0x65, 0x49, 0x64, 0x12, 0x1f, 0x0a, 0x0b, 0x70, 0x72, 0x6f, 0x76, 0x69, 0x64, 0x65,
+	0x72, 0x5f, 0x69, 0x64, 0x18, 0x07, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0a, 0x70, 0x72, 0x6f, 0x76,
+	0x69, 0x64, 0x65, 0x72, 0x49, 0x64, 0x12, 0x12, 0x0a, 0x04, 0x73, 0x70, 0x6f, 0x74, 0x18, 0x08,
+	0x20, 0x01, 0x28, 0x08, 0x52, 0x04, 0x73, 0x70, 0x6f, 0x74, 0x22, 0x3c, 0x0a, 0x0e, 0x55, 0x6e,
+	0x6d, 0x65, 0x74, 0x43, 0x6f, 0x6e, 0x64, 0x69, 0x74, 0x69, 0x6f, 0x6e, 0x12, 0x12, 0x0a, 0x04,
+	0x6e, 0x61, 0x6d, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x04, 0x6e, 0x61, 0x6d, 0x65,
+	0x12, 0x16, 0x0a, 0x06, 0x72, 0x65, 0x61, 0x73, 0x6f, 0x6e, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09,
+	0x52, 0x06, 0x72, 0x65, 0x61, 0x73, 0x6f, 0x6e, 0x42, 0x4c, 0x5a, 0x4a, 0x67, 0x69, 0x74, 0x68,
+	0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x73, 0x69, 0x64, 0x65, 0x72, 0x6f, 0x6c, 0x61, 0x62,
+	0x73, 0x2f, 0x74, 0x61, 0x6c, 0x6f, 0x73, 0x2f, 0x70, 0x6b, 0x67, 0x2f, 0x6d, 0x61, 0x63, 0x68,
+	0x69, 0x6e, 0x65, 0x72, 0x79, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x72, 0x65, 0x73, 0x6f, 0x75, 0x72,
+	0x63, 0x65, 0x2f, 0x64, 0x65, 0x66, 0x69, 0x6e, 0x69, 0x74, 0x69, 0x6f, 0x6e, 0x73, 0x2f, 0x72,
+	0x75, 0x6e, 0x74, 0x69, 0x6d, 0x65, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
@@ -638,22 +688,23 @@ func file_resource_definitions_runtime_runtime_proto_rawDescGZIP() []byte {
 	return file_resource_definitions_runtime_runtime_proto_rawDescData
 }
 
-var file_resource_definitions_runtime_runtime_proto_msgTypes = make([]protoimpl.MessageInfo, 8)
+var file_resource_definitions_runtime_runtime_proto_msgTypes = make([]protoimpl.MessageInfo, 9)
 var file_resource_definitions_runtime_runtime_proto_goTypes = []interface{}{
 	(*KernelModuleSpecSpec)(nil),   // 0: talos.resource.definitions.runtime.KernelModuleSpecSpec
 	(*KernelParamSpecSpec)(nil),    // 1: talos.resource.definitions.runtime.KernelParamSpecSpec
 	(*KernelParamStatusSpec)(nil),  // 2: talos.resource.definitions.runtime.KernelParamStatusSpec
 	(*MachineStatusSpec)(nil),      // 3: talos.resource.definitions.runtime.MachineStatusSpec
 	(*MachineStatusStatus)(nil),    // 4: talos.resource.definitions.runtime.MachineStatusStatus
-	(*MountStatusSpec)(nil),        // 5: talos.resource.definitions.runtime.MountStatusSpec
-	(*PlatformMetadataSpec)(nil),   // 6: talos.resource.definitions.runtime.PlatformMetadataSpec
-	(*UnmetCondition)(nil),         // 7: talos.resource.definitions.runtime.UnmetCondition
-	(enums.RuntimeMachineStage)(0), // 8: talos.resource.definitions.enums.RuntimeMachineStage
+	(*MetaKeySpec)(nil),            // 5: talos.resource.definitions.runtime.MetaKeySpec
+	(*MountStatusSpec)(nil),        // 6: talos.resource.definitions.runtime.MountStatusSpec
+	(*PlatformMetadataSpec)(nil),   // 7: talos.resource.definitions.runtime.PlatformMetadataSpec
+	(*UnmetCondition)(nil),         // 8: talos.resource.definitions.runtime.UnmetCondition
+	(enums.RuntimeMachineStage)(0), // 9: talos.resource.definitions.enums.RuntimeMachineStage
 }
 var file_resource_definitions_runtime_runtime_proto_depIdxs = []int32{
-	8, // 0: talos.resource.definitions.runtime.MachineStatusSpec.stage:type_name -> talos.resource.definitions.enums.RuntimeMachineStage
+	9, // 0: talos.resource.definitions.runtime.MachineStatusSpec.stage:type_name -> talos.resource.definitions.enums.RuntimeMachineStage
 	4, // 1: talos.resource.definitions.runtime.MachineStatusSpec.status:type_name -> talos.resource.definitions.runtime.MachineStatusStatus
-	7, // 2: talos.resource.definitions.runtime.MachineStatusStatus.unmet_conditions:type_name -> talos.resource.definitions.runtime.UnmetCondition
+	8, // 2: talos.resource.definitions.runtime.MachineStatusStatus.unmet_conditions:type_name -> talos.resource.definitions.runtime.UnmetCondition
 	3, // [3:3] is the sub-list for method output_type
 	3, // [3:3] is the sub-list for method input_type
 	3, // [3:3] is the sub-list for extension type_name
@@ -728,7 +779,7 @@ func file_resource_definitions_runtime_runtime_proto_init() {
 			}
 		}
 		file_resource_definitions_runtime_runtime_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*MountStatusSpec); i {
+			switch v := v.(*MetaKeySpec); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -740,7 +791,7 @@ func file_resource_definitions_runtime_runtime_proto_init() {
 			}
 		}
 		file_resource_definitions_runtime_runtime_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*PlatformMetadataSpec); i {
+			switch v := v.(*MountStatusSpec); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -752,6 +803,18 @@ func file_resource_definitions_runtime_runtime_proto_init() {
 			}
 		}
 		file_resource_definitions_runtime_runtime_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*PlatformMetadataSpec); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_resource_definitions_runtime_runtime_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*UnmetCondition); i {
 			case 0:
 				return &v.state
@@ -770,7 +833,7 @@ func file_resource_definitions_runtime_runtime_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_resource_definitions_runtime_runtime_proto_rawDesc,
 			NumEnums:      0,
-			NumMessages:   8,
+			NumMessages:   9,
 			NumExtensions: 0,
 			NumServices:   0,
 		},
diff --git a/pkg/machinery/api/resource/definitions/runtime/runtime_vtproto.pb.go b/pkg/machinery/api/resource/definitions/runtime/runtime_vtproto.pb.go
index 23b0f3ea6..6eeec2b36 100644
--- a/pkg/machinery/api/resource/definitions/runtime/runtime_vtproto.pb.go
+++ b/pkg/machinery/api/resource/definitions/runtime/runtime_vtproto.pb.go
@@ -280,6 +280,46 @@ func (m *MachineStatusStatus) MarshalToSizedBufferVT(dAtA []byte) (int, error) {
 	return len(dAtA) - i, nil
 }
 
+func (m *MetaKeySpec) MarshalVT() (dAtA []byte, err error) {
+	if m == nil {
+		return nil, nil
+	}
+	size := m.SizeVT()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalToSizedBufferVT(dAtA[:size])
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *MetaKeySpec) MarshalToVT(dAtA []byte) (int, error) {
+	size := m.SizeVT()
+	return m.MarshalToSizedBufferVT(dAtA[:size])
+}
+
+func (m *MetaKeySpec) MarshalToSizedBufferVT(dAtA []byte) (int, error) {
+	if m == nil {
+		return 0, nil
+	}
+	i := len(dAtA)
+	_ = i
+	var l int
+	_ = l
+	if m.unknownFields != nil {
+		i -= len(m.unknownFields)
+		copy(dAtA[i:], m.unknownFields)
+	}
+	if len(m.Value) > 0 {
+		i -= len(m.Value)
+		copy(dAtA[i:], m.Value)
+		i = encodeVarint(dAtA, i, uint64(len(m.Value)))
+		i--
+		dAtA[i] = 0xa
+	}
+	return len(dAtA) - i, nil
+}
+
 func (m *MountStatusSpec) MarshalVT() (dAtA []byte, err error) {
 	if m == nil {
 		return nil, nil
@@ -587,6 +627,20 @@ func (m *MachineStatusStatus) SizeVT() (n int) {
 	return n
 }
 
+func (m *MetaKeySpec) SizeVT() (n int) {
+	if m == nil {
+		return 0
+	}
+	var l int
+	_ = l
+	l = len(m.Value)
+	if l > 0 {
+		n += 1 + l + sov(uint64(l))
+	}
+	n += len(m.unknownFields)
+	return n
+}
+
 func (m *MountStatusSpec) SizeVT() (n int) {
 	if m == nil {
 		return 0
@@ -1244,6 +1298,89 @@ func (m *MachineStatusStatus) UnmarshalVT(dAtA []byte) error {
 	}
 	return nil
 }
+func (m *MetaKeySpec) UnmarshalVT(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflow
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= uint64(b&0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: MetaKeySpec: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: MetaKeySpec: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Value", wireType)
+			}
+			var stringLen uint64
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflow
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				stringLen |= uint64(b&0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			intStringLen := int(stringLen)
+			if intStringLen < 0 {
+				return ErrInvalidLength
+			}
+			postIndex := iNdEx + intStringLen
+			if postIndex < 0 {
+				return ErrInvalidLength
+			}
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Value = string(dAtA[iNdEx:postIndex])
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skip(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if (skippy < 0) || (iNdEx+skippy) < 0 {
+				return ErrInvalidLength
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.unknownFields = append(m.unknownFields, dAtA[iNdEx:iNdEx+skippy]...)
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
 func (m *MountStatusSpec) UnmarshalVT(dAtA []byte) error {
 	l := len(dAtA)
 	iNdEx := 0
diff --git a/pkg/machinery/resources/runtime/deep_copy.generated.go b/pkg/machinery/resources/runtime/deep_copy.generated.go
index af44917fa..160864156 100644
--- a/pkg/machinery/resources/runtime/deep_copy.generated.go
+++ b/pkg/machinery/resources/runtime/deep_copy.generated.go
@@ -2,7 +2,7 @@
 // License, v. 2.0. If a copy of the MPL was not distributed with this
 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-// Code generated by "deep-copy -type KernelModuleSpecSpec -type KernelParamSpecSpec -type KernelParamStatusSpec -type MachineStatusSpec -type MountStatusSpec -type PlatformMetadataSpec -header-file ../../../../hack/boilerplate.txt -o deep_copy.generated.go ."; DO NOT EDIT.
+// Code generated by "deep-copy -type KernelModuleSpecSpec -type KernelParamSpecSpec -type KernelParamStatusSpec -type MachineStatusSpec -type MetaKeySpec -type MountStatusSpec -type PlatformMetadataSpec -header-file ../../../../hack/boilerplate.txt -o deep_copy.generated.go ."; DO NOT EDIT.
 
 package runtime
 
@@ -38,6 +38,12 @@ func (o MachineStatusSpec) DeepCopy() MachineStatusSpec {
 	return cp
 }
 
+// DeepCopy generates a deep copy of MetaKeySpec.
+func (o MetaKeySpec) DeepCopy() MetaKeySpec {
+	var cp MetaKeySpec = o
+	return cp
+}
+
 // DeepCopy generates a deep copy of MountStatusSpec.
 func (o MountStatusSpec) DeepCopy() MountStatusSpec {
 	var cp MountStatusSpec = o
diff --git a/pkg/machinery/resources/runtime/meta_key.go b/pkg/machinery/resources/runtime/meta_key.go
new file mode 100644
index 000000000..7624b1be9
--- /dev/null
+++ b/pkg/machinery/resources/runtime/meta_key.go
@@ -0,0 +1,62 @@
+// This Source Code Form is subject to the terms of the Mozilla Public
+// License, v. 2.0. If a copy of the MPL was not distributed with this
+// file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+package runtime
+
+import (
+	"github.com/cosi-project/runtime/pkg/resource"
+	"github.com/cosi-project/runtime/pkg/resource/meta"
+	"github.com/cosi-project/runtime/pkg/resource/protobuf"
+	"github.com/cosi-project/runtime/pkg/resource/typed"
+
+	"github.com/siderolabs/talos/pkg/machinery/proto"
+)
+
+// MetaKeyType is type of MetaKey resource.
+const MetaKeyType = resource.Type("MetaKeys.runtime.talos.dev")
+
+// MetaKey resource holds value of a key in META partition.
+type MetaKey = typed.Resource[MetaKeySpec, MetaKeyExtension]
+
+// MetaKeySpec describes status of the defined sysctls.
+//
+//gotagsrewrite:gen
+type MetaKeySpec struct {
+	Value string `yaml:"value" protobuf:"1"`
+}
+
+// NewMetaKey initializes a MetaKey resource.
+func NewMetaKey(namespace resource.Namespace, id resource.ID) *MetaKey {
+	return typed.NewResource[MetaKeySpec, MetaKeyExtension](
+		resource.NewMetadata(namespace, MetaKeyType, id, resource.VersionUndefined),
+		MetaKeySpec{},
+	)
+}
+
+// MetaKeyExtension is auxiliary resource data for MetaKey.
+type MetaKeyExtension struct{}
+
+// ResourceDefinition implements meta.ResourceDefinitionProvider interface.
+func (MetaKeyExtension) ResourceDefinition() meta.ResourceDefinitionSpec {
+	return meta.ResourceDefinitionSpec{
+		Type:             MetaKeyType,
+		Aliases:          []resource.Type{"meta"},
+		DefaultNamespace: NamespaceName,
+		PrintColumns: []meta.PrintColumn{
+			{
+				Name:     "Value",
+				JSONPath: `{.value}`,
+			},
+		},
+	}
+}
+
+func init() {
+	proto.RegisterDefaultTypes()
+
+	err := protobuf.RegisterDynamic[MetaKeySpec](MetaKeyType, &MetaKey{})
+	if err != nil {
+		panic(err)
+	}
+}
diff --git a/pkg/machinery/resources/runtime/runtime.go b/pkg/machinery/resources/runtime/runtime.go
index ea23f36f6..721478147 100644
--- a/pkg/machinery/resources/runtime/runtime.go
+++ b/pkg/machinery/resources/runtime/runtime.go
@@ -5,4 +5,4 @@
 package runtime
 
 //nolint:lll
-//go:generate deep-copy -type KernelModuleSpecSpec -type KernelParamSpecSpec -type KernelParamStatusSpec -type MachineStatusSpec -type MountStatusSpec -type PlatformMetadataSpec -header-file ../../../../hack/boilerplate.txt -o deep_copy.generated.go .
+//go:generate deep-copy -type KernelModuleSpecSpec -type KernelParamSpecSpec -type KernelParamStatusSpec -type MachineStatusSpec -type MetaKeySpec -type MountStatusSpec -type PlatformMetadataSpec -header-file ../../../../hack/boilerplate.txt -o deep_copy.generated.go .
diff --git a/pkg/machinery/resources/runtime/runtime_test.go b/pkg/machinery/resources/runtime/runtime_test.go
index ebdaa5fb1..b4017c732 100644
--- a/pkg/machinery/resources/runtime/runtime_test.go
+++ b/pkg/machinery/resources/runtime/runtime_test.go
@@ -30,6 +30,7 @@ func TestRegisterResource(t *testing.T) {
 		&runtime.KernelParamSpec{},
 		&runtime.KernelParamStatus{},
 		&runtime.MachineStatus{},
+		&runtime.MetaKey{},
 		&runtime.MountStatus{},
 		&runtime.PlatformMetadata{},
 	} {
diff --git a/website/content/v1.4/reference/api.md b/website/content/v1.4/reference/api.md
index f47d90cb0..7eee74ef0 100644
--- a/website/content/v1.4/reference/api.md
+++ b/website/content/v1.4/reference/api.md
@@ -176,6 +176,7 @@ description: Talos gRPC API reference.
     - [KernelParamStatusSpec](#talos.resource.definitions.runtime.KernelParamStatusSpec)
     - [MachineStatusSpec](#talos.resource.definitions.runtime.MachineStatusSpec)
     - [MachineStatusStatus](#talos.resource.definitions.runtime.MachineStatusStatus)
+    - [MetaKeySpec](#talos.resource.definitions.runtime.MetaKeySpec)
     - [MountStatusSpec](#talos.resource.definitions.runtime.MountStatusSpec)
     - [PlatformMetadataSpec](#talos.resource.definitions.runtime.PlatformMetadataSpec)
     - [UnmetCondition](#talos.resource.definitions.runtime.UnmetCondition)
@@ -3222,6 +3223,21 @@ MachineStatusStatus describes machine current status at the stage.
 
 
 
+<a name="talos.resource.definitions.runtime.MetaKeySpec"></a>
+
+### MetaKeySpec
+MetaKeySpec describes status of the defined sysctls.
+
+
+| Field | Type | Label | Description |
+| ----- | ---- | ----- | ----------- |
+| value | [string](#string) |  |  |
+
+
+
+
+
+
 <a name="talos.resource.definitions.runtime.MountStatusSpec"></a>
 
 ### MountStatusSpec