Re: Is there a way to get the architecture of the machine just booted up by GRUB2: [32|64]-[amd|arm]? ...

[Andrei Borzenkov]

On 17.12.2023 23:50, Pascal Hambourg wrote:
...
> Note 2: there have been a few lightweight PC with 32-bit UEFI firmware
> and 64-bit x86 CPU around. To boot on these you need to install an x86
> 32-bit EFI image as bootia32.efi. It can boot i386 and amd64 kernels.
...
> if [ $grub_cpu = x86_64 ]; then
>         # instructions to boot with amd64 kernel
> elif [ $grub_cpu = i386 ]; then
>         # instructions to boot with i386 kernel

This obviously will not work for such systems as you mentioned earlier. 
Besides, distributions may require additional CPU features beyond mere 
"supports 64 bit".