Options:
 -b <size>             sector size (512, 1024, 2048 or 4096)
 -c[=<mode>]           compatible mode: 'dos' or 'nondos' (default)
 -h                    print this help text
 -u[=<unit>]           display units: 'cylinders' or 'sectors' (default)
 -v                    print program version
 -C <number>           specify the number of cylinders
 -H <number>           specify the number of heads
 -S <number>           specify the number of sectors per track
boris@boris-1015CX:~$ sudo fdisk -l
Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x0007c841
   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048   623069183   311533568   83  Linux
/dev/sda2       623071230   625141759     1035265    5  Extended
Partition 2 does not start on physical sector boundary.
/dev/sda5       623071232   625141759     1035264   82  Linux swap / Solaris
boris@boris-1015CX:~$ sudo fdisk -l
Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x0007c841
   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048   623069183   311533568   83  Linux
/dev/sda2       623071230   625141759     1035265    5  Extended
Partition 2 does not start on physical sector boundary.
/dev/sda5       623071232   625141759     1035264   82  Linux swap / Solaris
boris@boris-1015CX:~$ sudo fdisk -l
Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0x0007c841
   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048   623069183   311533568   83  Linux
/dev/sda2       623071230   625141759     1035265    5  Extended
Partition 2 does not start on physical sector boundary.
/dev/sda5       623071232   625141759     1035264   82  Linux swap / Solaris
boris@boris-1015CX:~$ 
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