Using memtest86 with UEFI

[Liam Proven]

On Thu, 14 Apr 2022 at 17:33, gene heskett <gheskett at shentel.net> wrote:
>
> That line of users is already quite long, Liam, I am in it too. If
> memtest86 is incompatible with UEFI, or vice-versa, that needs to have
> been fixed, 6 years ago?
>
> Why has it not been?

If it is a 16-bit binary, that might be why. I know that people have
problems with early MacBooks that have 32-bit UEFI firmware but 64-bit
processors. No normal 32-bit-only PCs had UEFI, so all Linux distros
expect UEFI to be 64-bit and 32-bit machines to not be UEFI. The
combination of 2 things that should not be found together apparently
makes it hard to install Linux on certain now-old MacBooks.

More info, merely as an example:
https://mattgadient.com/linux-dvd-images-and-how-to-for-32-bit-efi-macs-late-2006-models/

If 32-bit UEFI is a problem, then a 16-bit UEFI payload is probably
next to impossible. :-( And if they made memtestx86+ fully 64-bit it
would stop working on older 32-bit and BIOS-only PCs.

Damned if you do, damned if you don't. :-/

> Take care abd stay well, Liam.

You too!



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