Usage: fdisk [-l] [-b SSZ] [-u] device
E.g.: fdisk /dev/hda  (for the first IDE disk)
  or: fdisk /dev/sdc  (for the third SCSI disk)
  or: fdisk /dev/eda  (for the first PS/2 ESDI drive)
  or: fdisk /dev/rd/c0d0  or: fdisk /dev/ida/c0d0  (for RAID devices)
  ...
ubuntu@ubuntu:/media/hddd/home$ cd ~
ubuntu@ubuntu:~$ fdisk -l
ubuntu@ubuntu:~$ sudo fidks -l
sudo: fidks: command not found
ubuntu@ubuntu:~$ sudo fdisk -l

Disk /dev/hda: 80.0 GB, 80000000000 bytes
255 heads, 63 sectors/track, 9726 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/hda1   *           1           4       32098+  de  Dell Utility
/dev/hda2               5        9725    78083932+   7  HPFS/NTFS

Disk /dev/hdb: 122.9 GB, 122942324736 bytes
255 heads, 63 sectors/track, 14946 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/hdb1               1       14945   120045681    7  HPFS/NTFS

Disk /dev/hdd: 61.4 GB, 61471162368 bytes
255 heads, 63 sectors/track, 7473 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/hdd1   *           1        7166    57560863+  83  Linux
/dev/hdd2            7167        7473     2465977+   5  Extended
/dev/hdd5            7167        7473     2465946   82  Linux swap / Solaris