ubuntu@ubuntu:~$ sudo fdisk -l

Disk /dev/sda: 40.0 GB, 40007761920 bytes
255 heads, 63 sectors/track, 4864 cylinders, total 78140160 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: 0x671e671e

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *          63    15101099     7550518+   7  HPFS/NTFS/exFAT
/dev/sda2        15101100    78140159    31519530    5  Extended
/dev/sda5        15101163    78140159    31519498+   7  HPFS/NTFS/exFAT

Disk /dev/sdb: 4 MB, 4231680 bytes
1 heads, 9 sectors/track, 918 cylinders, total 8265 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: 0x4fcf3f37

Disk /dev/sdb doesn't contain a valid partition table