I have a question regarding adding device properties in OC - as
@Ellybz described in
this post.
Is this truely just cosmestic or can it actually impact the operational function of Big Sur?
The reason I ask is that I just added some device properties to tidy up my system profiler and after reboot Big Sur fails to boot again. The thing is, it could just be coincidence that I change the device properties...
I have been having maybe every 5th or 6th boot fail, but a reboot has always sorted it.
This time im getting a lot of errors "AppleKeyStore: operation failed/unexpected session".
And then apfs_vsop events - much like when the installer was failing, which we now think is due to NVRAM not working correctly (it looks like some UEFI firmwares implement a white-listing method for preventing all but certain NVRAM variables to write) so im wondering if this failure to boot is actually related to the NVRAM issue rather than me fiddling with device properties?
@TheBloke - any joy with your NVRAM variable spoofing tests?
Edit: I should add - I have booted from a backup EFI made before the device properties changes and it is still failing with the same errors