fdisk -l output

root@ubuntu:/home/ubuntu# fdisk -l

Disk /dev/sda: 8019 MB, 8019509248 bytes
251 heads, 44 sectors/track, 1418 cylinders, total 15663104 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: 0x0004d1b1

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            2048    15663103     7830528   83  Linux

Disk /dev/sdb: 4005 MB, 4005527552 bytes
124 heads, 62 sectors/track, 1017 cylinders, total 7823296 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: 0x00038d3b

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *          62     7818695     3909317   83  Linux