Intense Red composed on 2022-12-08 16:42 (UTC-0600):
> That seems to be the problem -- os-prober only shows that /dev/sdf1 has an
> OS on it, it seems to ignore the linux install on /dev/sdg1.
Did you install one in legacy mode and the other in UEFI mode?
Is GRUB_DISTRIBUTOR= in /etc/default/grub the same for both UEFI installations?
If
yes, very likely this is the root problem, because you didn't touch it for
either
installation. With UEFI, a directory in \EFI\ on the FAT ESP filesystem is
responsible for booting. If UEFI applies to both and there is only one ESP in
the
PC, one of your installations has overwritten the first installed, because the
result of GRUB_DISTRIBUTOR= in both is \EFI\debian aka /boot/efi/EFI/debian.
Your
BIOS only knows about the installation pointed to by whichever had last written
to
that location.
Please provide output from
efibootmgr -v
lsblk -f
cat /etc/fstab # from both installations
--
Evolution as taught in public schools is, like religion,
based on faith, not based on science.
Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
Felix Miata
