so I enabled the boot menu in the VM settings, entered it and reset the secure boot settings.
In BIOS/UEFI? What settings does this affect/what changes does this make?
Logs
Could be a UEFI bug in the VM itself;
Could also be that you didn't sign your boot image since that command seems to load the secure boot signing key into the UEFI firmware, if you cleared other signing keys then potentially no code can load. You would have to load the keys for whatever UEFI firmware vendor is used (presumably that made by the VM software maker) or sign it yourself, etc.
I'd have thought that would happen the first time I enrolled the keys though since I used the exact same command both times?
When you reset "secure boot settings" did you clear the TPM contents? Would that have included a. private key used in the disc encryption? Then when you regenerated keys it will have been with a different seed and so different.
I don't know much about his stuff, but that bit sounded odd to me.
I didn't regenerate the keys I just re-enrolled them. I assumed the old ones were still in the file system since they were still being used to sign the UKI?
That would make it stop at the end of the bootloader with decryption failure, not full bricking
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