ubuntu@ubuntu:~$ sudo fdisk -l

Disk /dev/sda: 4009 MB, 4009754624 bytes
145 heads, 48 sectors/track, 1125 cylinders, total 7831552 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: 0xc3072e18

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *          48     7831551     3915752    c  W95 FAT32 (LBA)

Disk /dev/sdb: 4194 MB, 4194304000 bytes
255 heads, 63 sectors/track, 509 cylinders, total 8192000 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: 0x00097ce3

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *          63     8177084     4088511   83  Linux

Disk /dev/sdc: 1048 MB, 1048576000 bytes
255 heads, 63 sectors/track, 127 cylinders, total 2048000 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: 0x000e6698

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1              63     2040254     1020096   82  Linux swap / Solaris

Disk /dev/sdd: 634.9 GB, 634893893632 bytes
255 heads, 63 sectors/track, 77188 cylinders, total 1240027136 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: 0x0002d25d

   Device Boot      Start         End      Blocks   Id  System
/dev/sdd1              63  1240025219   620012578+  83  Linux