Вот:
$ sudo blkid
/dev/sda1: UUID="sh032o-arR3-bLVz-Lmen-Kn9s-p99S-R5FBD2" TYPE="lvm2pv"
/dev/sda5: UUID="6bd92da2-6ae1-4283-a803-c3ba76489750" TYPE="ext2"
/dev/mapper/ubuntu-root: UUID="28ac1673-10b5-4118-95d6-f4ef46b50959" TYPE="ext3"
/dev/mapper/ubuntu-swap_1: TYPE="swap" UUID="58985b61-e1ac-46a7-bc75-b9976a59614f"
/dev/sdb1: LABEL="500_gigov" UUID="24d0d71d-f0fa-4bd9-b5f1-e7bc444722a4" TYPE="ext2"
$ ls -al /500_g
итого 8
drwxr-xr-x 2 root root 4096 2010-09-09 11:07 .
drwxr-xr-x 22 root root 4096 2010-09-15 16:11 ..
$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'vol_id --uuid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
# / was on /dev/mapper/ubuntu-root during installation
UUID=28ac1673-10b5-4118-95d6-f4ef46b50959 / ext3 relatime,errors=remount- ro 0 1
# /boot was on /dev/sda5 during installation
UUID=6bd92da2-6ae1-4283-a803-c3ba76489750 /boot ext2 relatime 0 2
# swap was on /dev/mapper/ubuntu-swap_1 during installation
UUID=58985b61-e1ac-46a7-bc75-b9976a59614f none swap sw 0 0
/dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0
/dev/fd0 /media/floppy0 auto rw,user,noauto,exec,utf8 0 0
UUID=24d0d71d-f0fa-4bd9-b5f1-e7bc444722a4 /500_g/ ext2 users,auto,rw,utf-8 0 0