I made a bootable USB stick, it has /boot, /, and swap partitions. It was becoming unreliable so I cloned it with gparted, and set the 'boot' flag on the boot partition. The new one won't boot. I think it's because I have yet to install grub, so there's no grub in the MBR. Assuming I know the device name of the stick (e.g. /dev/sde) what grub-install command would I use to get this clone working? Thanks.