sudo fdisk -l
[sudo] password for craig:

Disk /dev/sda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xf645a9cc

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1        9327    74919096   83  Linux
/dev/sda2            9328        9729     3229065    5  Extended
/dev/sda5            9328        9729     3229033+  82  Linux swap / Solaris

Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000

Disk /dev/sdb doesn't contain a valid partition table