Re: UEFI grub install fails
David Wright composed on 2025-08-18 11:13 (UTC-0700):
> On Mon 18 Aug 2025 at 00:31:13 (-0700), Van Snyder wrote:
>> Is this an unavoidable intrinsic problem with UEFI, or is it a twelve-
>> year-old bug in grub-install or grub-mkconfig — or whatever the Debian
>> installer uses?
> I don't think you've posted your new layout, so I'm only guessing.
> It's not the size of the disk (<2TB), but you did have the EFI in a
> logical partition, not a primary one. AFAIK that's not necessarily
> out of specification, but it might not be supported by your
> particular machine's firmware.
I'm coming up short finding the authority on this, but I'm pretty sure there is no
such thing as booting from an ESP that isn't on a GPT-partitioned disk, with
correct type assigned. I think the ESP type is technically at least a 4byte value
not supported by MBR disks, which are limited to 2byte types. The ESP also has a
unique UUID type c12a7328-f81f-11d2-ba4b-00a0c93ec93b that has no place in an MBR
table.
I missed Disklabel type: dos in the 2025-08-17 15:03 -0700 post, likely by seeing
the ESP on NVME. :p
--
Evolution as taught in public schools is, like religion,
based on faith, not based on science.
Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
Felix Miata
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