On Fri, 2021-01-29 at 21:02 -0300, Pablo Ferreira wrote: > No, I can't. > > Not now. I can't boot the system, only use android. I have to boot with my pen drive with Trisquel 8. I'm presuming a setup like this: * Computer, with following hardware: + Hard disk, with broken Guix System+GRUB installation. + USB ports, in which a USB drive with a functioning Trisquel is installed + Keyboard, screen, etc. Would it be possible to boot Trisquel on the computer (via the pendrive), and on the live system mount the relevant filesystems of the hard disk. (E.g. using gnome-disks, which has a nice interface.) Here's some speculative troubleshooting: > > > When I change from uefi to legacy, the system show what you can see in the > > > picture. Legacy == BIOS and UEFI == that other boot system, right? The GRUB variants for these are the ‘grub’ package and the ‘grub-efi’ package I think (see 10.13 Bootloader Configuration). The bootloader variant and the booting system probably need to match. Maxime -- Maxime Devos PGP Key: C1F3 3EE2 0C52 8FDB 7DD7 011F 49E3 EE22 1917 25EE Freenode handle: mdevos