On 05/29/2018 06:33 AM, Robert Heller wrote:
The UUID in the EFI boot options is 99E275E7-75A0-4B37-A2E6-C5385E600CB, which
does not to match anything, but the system is only happy booting the old
disk...
And at this point, it will only boot in legacy mode off the old disk.
That's what I meant, I think. Legacy mode is BIOS-compatible. If
you're booting in legacy mode, you can't access the UEFI variables. The
old disk probably has GRUB installed on the first block. It might be
booting in legacy mode *because* the UEFI boot option's UUID doesn't
match your partition.
You might want to disable legacy mode entirely. Boot a rescue disk if
needed, and fix the boot option from there.
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