systemd-boot expects being loaded from ESP and is quite unhappy in case the loaded image device path is something else. When running on qemu this can easily happen though. Case one is direct kernel boot, i.e. loading via 'qemu -kernel systemd-bootx64.efi'. Case two is sd-boot being added to the ovmf firmware image and being loaded from there. This patch detects both cases and goes inspect all file systems known to the firmware, trying to find the ESP. When present the VMMBootOrderNNNN variables are used to inspect the file systems in the given order.
System and Service Manager
Details
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