mount /dev/sdb2 /mnt/ mount /dev/sdb1 /mnt/boot/efi # # rsync -xrlptgoEv --progress --exclude={'/dev/','/proc/','/sys/','/tmp/','/run/','/mnt/','/media/','/lost+found','/home/*/.cache/*'} / /mnt
# # for i in /dev /dev/pts /proc /sys /sys/firmware/efi/efivars /run; do mount -B $i /mnt/$i; done chroot /mnt grub-install /dev/sdb update-grub