Re: Loading pcmemtest on UEFI

[Gordon Messmer]

On 9/2/21 12:57 AM, Andrei Borzenkov wrote:
> I briefly tried pcmemtest from
> https://gordonmessmer.fedorapeople.org/pcmemtest-unsigned-x64/pcmemtest-unsigned-x64-efi-1.4-1.fc36.x86_64.rpm
> with grub 2.06 (openSUSE Tumbleweed) and it runs after
>
> chainloader (hd0,gpt1)/pcmemtest.efi


Thank you for testing that.  I suppose that implicates Fedora's GRUB as 
the problem.


> Are you sure your grub binary supports chainloader command in the first
> place? Signed grub images do not include every possible grub module and
> disable external module loading.


I'm mostly sure.  Other Fedora users report using the "chainloader" 
command to load the Windows boot loader, and if I misspell 
"chainloader", GRUB gives me an error indicating that the command isn't 
present.  If it weren't supported, I'd expect to see that same error.