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: 0x95380202

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1       30401   244196001    7  HPFS/NTFS

Disk /dev/sdb: 160.0 GB, 160041885696 bytes
255 heads, 63 sectors/track, 19457 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xe840e840

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1       18705   150247881   83  Linux
/dev/sdb2           18706       19457     6040440    5  Extended
/dev/sdb5           18706       19457     6040408+  82  Linux swap / Solaris

Disk /dev/sdc: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x95380202

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1   *           1       30401   244196001    7  HPFS/NTFS


ubuntu@ubuntu:~$ sudo e2fsck /dev/sdb 
e2fsck 1.40.8 (13-Mar-2008)
e2fsck: Device or resource busy while trying to open /dev/sdb
Filesystem mounted or opened exclusively by another program?