[user@localhost media]$ sudo sdparm -a /dev/sdb
/dev/sdb: Seagate   FreeAgent Go      0142
Power condition mode page:
>>> warning: mode page seems malformed
The page number field should be 0x1a, but is 0x00; try '--flexible'
SAT ATA Power condition mode page:
>>> warning: mode page seems malformed
The page number field should be 0x1a, but is 0x00; try '--flexible'

[user@localhost media]$ sudo fdisk /dev/sdb -l

Disk /dev/sdb: 500.1 GB, 500107860992 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xa4b57300

Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1       60801   488384001    7  HPFS/NTFS
[viral@sachde media]$ sudo fdisk /dev/sdb1 -l

Disk /dev/sdb1: 500.1 GB, 500105217024 bytes
255 heads, 63 sectors/track, 60800 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x69205244

This doesn't look like a partition table
Probably you selected the wrong device.

Device Boot      Start         End      Blocks   Id  System
/dev/sdb1p1   ?       13578      119522   850995205   72  Unknown
Partition 1 does not end on cylinder boundary.
/dev/sdb1p2   ?       45382       79243   271987362   74  Unknown
Partition 2 does not end on cylinder boundary.
/dev/sdb1p3   ?       10499       10499           0   65  Novell Netware 386
Partition 3 does not end on cylinder boundary.
/dev/sdb1p4          167628      167631       25817+   0  Empty
Partition 4 does not end on cylinder boundary.

Partition table entries are not in disk order