Hmm, thinking further on this, what does having an "empty internal key list" actually mean? I assume it means that something gets written to the firmware in the MOK boot variable area. Does that wipe out my existing MOK keys? or just allow unsigned booting forevermore?
I have a Fedora secure boot system installed, with its key in the MOK, now I want to boot JRandom LiveCD. It has an unsigned second-stage bootloader (GRUB2 or equivalent) and unsigned kernel. Can it use shim as its first stage? It would seem that either that would mean I lose my Fedora key in the MOK or I add an empty key that allows anything to boot thereafter. But if it uses the LF first-stage, it can boot (after I press OK) and not change the state of the system.
Or have I got that wrong?
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