sudo fdisk -l

Disk /dev/hda: 300.0 GB, 300069052416 bytes
255 heads, 63 sectors/track, 36481 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x1a35e3d2

   Device Boot      Start         End      Blocks   Id  System
/dev/hda1   *           2       36481   293025600    f  W95 Ext'd (LBA)
/dev/hda5               2       36481   293025568+  83  Linux

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000e5067

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1       60801   488384001    5  Extended
/dev/sda5               1       60801   488383969+  83  Linux

Disk /dev/sdb: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xc768c768

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           1        3659    29390886   83  Linux
/dev/sdb2            3660       30401   214805115    5  Extended
/dev/sdb5           30159       30401     1951897+  82  Linux swap / Solaris
/dev/sdb6            3660       30157   212845122   83  Linux

Partition table entries are not in disk order