Hello,

maxim.cournoyer@gmail.com writes:

> Using Guix System, the bootloader declaration doesn't currently seem to
> support being installed to multiple drives:
>
> (bootloader (bootloader-configuration
>                  (bootloader grub-bootloader)
>                  (target "/dev/sda")
>                  (terminal-outputs '(console))))
>  --8<---------------cut here---------------end--------------->8---
>
> I suggest to change it so that target can be passed a list like
>
> (bootloader (bootloader-configuration
>                  (bootloader grub-bootloader)
>                  (target '("/dev/sda" "/dev/sdb"))
>                  (terminal-outputs '(console))))
>  --8<---------------cut here---------------end--------------->8---
>
> This is useful when trying to boot a degraded RAID array.

The following patches do exactly this (target becomes the plural
targets).  I tested it on my system, disconnecting the first drive of my
RAID1 array, and could at least boot to GRUB fine (although full boot
failed due to https://issues.guix.gnu.org/40999).

Booting a VM using an image generated from the bare-bones.tmpl template
also worked fine.