A newbie question. I'm trying to bakup the current directory to my MO device. That device is registered in the system as /dev/sda and is mounted on /mnt/mo Neither of the following attempts success in creating a backup.tar.gz file on my MO drive: tar cvzf /dev/sda backup.tar.gz . tar cvzf /mnt/mo/backup.tar.gz . What am I doing wrong? The MO drive is definitely mounted, but all I get is a backup.tar.gz file in the current directory.