See "man sudo_root" for details.
ubuntu@ubuntu:~$ sudo fdisk -l
Disk /dev/sda: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x14221421
Device Boot Start End Blocks Id System
/dev/sda1 * 1 21050 169084093+ 7 HPFS/NTFS
/dev/sda2 21051 30400 75103875 f W95 Ext'd (LBA)
/dev/sda5 26517 30400 31198198+ 7 HPFS/NTFS
/dev/sda6 21051 21409 2883604+ 82 Linux swap / Solaris
/dev/sda7 21411 26516 41013913+ 83 Linux
Partition table entries are not in disk order
Disk /dev/hda: 81.9 GB, 81964302336 bytes
255 heads, 63 sectors/track, 9964 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xe7e7e7e7
Device Boot Start End Blocks Id System
/dev/hda1 * 1 2550 20482843+ 7 HPFS/NTFS
/dev/hda2 2551 9963 59544922+ f W95 Ext'd (LBA)
/dev/hda5 2551 5737 25599546 7 HPFS/NTFS
/dev/hda6 5738 9963 33945313+ 7 HPFS/NTFS