I am unable to see a 750GB drive that is attached to my 12.04 machine using a USB 2.0 drive mate. The drive was pulled out of a Windows 7 machine and I am just trying to get all of the information off of it so I can wipe it and start over.

fdisk -l shows

Disk /dev/sda: 250.1 GB, 250059350016 bytes

255 heads, 63 sectors/track, 30401 cylinders, total 488397168 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: 0x0000183e



   Device Boot      Start         End      Blocks   Id  System

/dev/sda1   *        2048   480094207   240046080   83  Linux

/dev/sda2       480096254   488396799     4150273    5  Extended

/dev/sda5       480096256   488396799     4150272   82  Linux swap / Solaris

Note: sector size is 4096 (not 512)



Disk /dev/sdb: 750.2 GB, 750156374016 bytes

255 heads, 63 sectors/track, 11400 cylinders, total 183143646 sectors

Units = sectors of 1 * 4096 = 4096 bytes

Sector size (logical/physical): 4096 bytes / 4096 bytes

I/O size (minimum/optimal): 4096 bytes / 4096 bytes

Disk identifier: 0x07f2837e



   Device Boot      Start         End      Blocks   Id  System

/dev/sdb1              63      208844      835128   de  Dell Utility

/dev/sdb2   *      212992    41172991   163840000    7  HPFS/NTFS/exFAT

/dev/sdb3        41172992  1465147119  1400929216    7  HPFS/NTFS/exFAT



sudo blkid

sudo blkid

/dev/sda1: UUID="dd81fbe4-0659-4eb8-9ef2-f4851ed6ff3e" TYPE="ext4" 

/dev/sda5: UUID="1cb1a836-7896-4537-9e31-2cacc1a9250b" TYPE="swap" 

/dev/sr0: LABEL="Monsters, Inc." TYPE="udf" 



sudo mount  -t ntfs /dev/sdb /media/windows

NTFS signature is missing.

Failed to mount '/dev/sdb': Invalid argument

The device '/dev/sdb' doesn't seem to have a valid NTFS.

Maybe the wrong device is used? Or the whole disk instead of a

partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?

I am unsure as to why this is not working any help would be greatly appreciated.