root@ubuntu-studio:~# mount /dev/sdb1 /mnt; for d in proc sys dev dev/pts; do sudo mount --bind /$d /mnt/$d; done; chroot /mnt dpkg-reconfigure grub-pc
mount: unknown filesystem type 'LVM2_member'
mount: mount point /mnt/proc does not exist
mount: mount point /mnt/sys does not exist
mount: mount point /mnt/dev does not exist
mount: mount point /mnt/dev/pts does not exist
chroot: failed to run command ‘dpkg-reconfigure’: No such file or directory
root@ubuntu-studio:~#