The call to "blkid -c /dev/null" on Precise Pangolin Alpha 1 takes
exceedingly long. This occurs when the BIOS is incorrectly set to
indicate a floppy drive is present when none is physically installed.
Use cached blkid results instead.
Ubuntu launchpad 910379 - Gparted does not start and continues to
scan devices
https://bugs.launchpad.net/ubuntu/+source/gparted/+bug/910379
Normally, the blkid command will detect the UUID for a file system.
In cases where blkid fails to detect the UUID and the vol_id command
is available, then try using the vol_id command.