root@klhost:~# fdisk /dev/sdb

Command (m for help): p

Disk /dev/sdb: 85.9 GB, 85899345920 bytes
255 heads, 63 sectors/track, 10443 cylinders, total 167772160 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0000337c

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *        2048      499711      248832   83  Linux
/dev/sdb2          501758   167772159    83635201    5  Extended
/dev/sdb5          503806   167772159    83634177   8e  Linux LVM

Command (m for help): d
Partition number (1-5): 5

Command (m for help): n
Partition type:
   p   primary (1 primary, 1 extended, 2 free)
   l   logical (numbered from 5)
Select (default p): l
Adding logical partition 5
First sector (503806-167772159, default 503806): 501760
Value out of range.
First sector (503806-167772159, default 503806):