Bug#966575: How to fix LLVM/LUKS installs?

[Colin Watson]

On Tue, Aug 04, 2020 at 05:08:44PM -0400, Todd Howe wrote:
> ls /media/root/$UUID
> apt install grub
> grub-install --root-directory=/media/root/$UUID /dev/sda

I generally don't recommend this sort of approach.  Instead, and
simpler:

  for x in dev proc sys; do
    mount --rbind "/$x" "/media/root/$UUID/$x"
  done
  chroot "/media/root/$UUID/$x"
  dpkg-reconfigure grub-pc
  exit
  for x in dev proc sys; do
    umount -l "/media/root/$UUID/$x"
  done

(Untested and there may be some minor roadblocks, but this is my usual
approach; if you do this interactively then hopefully it'll be
reasonably clear how to make whatever minor adjustments are needed.  I
think it's essentially just the bind-mounts that you were missing when
you tried to chroot later on.)

-- 
Colin Watson (he/him)                              [cjwatson at debian.org]