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

[Narcis Garcia]

El 17/12/23 a les 9:43, Albretch Mueller ha escrit:
> I can't find it in the documentation:
>
> https://www.gnu.org/software/grub/manual/grub/grub.html
>
> https://www.mail-archive.com/search?l=help-grub%40gnu.org&q=architecture+amd64
>
> you could deduce via dmidecode if a machine is 32- or 64-bit, and,
> say, in Debian Linux, after boot up you can get the processor type
> from the OS by running:
>
> $ dpkg --print-architecture
> amd64
>
> $ uname -a
> Linux debian 5.10.0-18-amd64 #1 SMP Debian 5.10.140-1 (2022-09-02)
> x86_64 GNU/Linux
>
> How could you get the architecture it is running on from GRUB2?
>
> lbrtchx

Hello, I don't know in GRUB command line, but in GNU operating systems 
you need to differentiate:

This returns something if CPU is 64-bit capable (only Linux):
$ grep -ie '^flags.*:.* lm ' /proc/cpuinfo


This returns running kernel architecture (either Linux or Hurd):
$ uname -m

 This returns Dpkg/Debian packages architecture:
$ dpkg --print-architecture

I've tried on GNU GRUB 2.06 :
$ lbrtchx
error: can't find command `lbrtchx'.


--
Narcis Garcia