If you want to add a device like an external hard drive to your /etc/fstab file, it helps if you know the hard drive’s UUID. If you use K/Ubuntu, the following command will display the UUID, along with other useful information.
$ sudo vol_id /dev/sdo1 Password: ID_FS_USAGE=filesystem ID_FS_TYPE=ext3 ID_FS_VERSION=1.0 ID_FS_UUID=4857d4bb-5f6b-4f21-af62-830ebae92cff ID_FS_LABEL=movies ID_FS_LABEL_SAFE=movies
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