# fdisk -l /dev/sdb
This disk has both DOS and BSD magic.
Give the 'b' command to go to BSD mode.

Disk /dev/sdb: 256 MB, 256376832 bytes
256 heads, 63 sectors/track, 31 cylinders
Units = cylinders of 16128 * 512 = 8257536 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb4   *           1           4       25000   a5  FreeBSD
Partition 4 has different physical/logical endings:
     phys=(1023, 255, 63) logical=(3, 25, 41)