ubuntu@ubuntu:~$ sudo fdisk -l

Disk /dev/sda: 360.1 GB, 360080695296 bytes
255 heads, 63 sectors/track, 43777 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00082d70

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1       12748   102398278+   7  HPFS/NTFS
/dev/sda2           12749       25602   103249755    7  HPFS/NTFS
/dev/sda3           25603       42557   136191037+  83  Linux
/dev/sda4           42558       43778     9798657    5  Extended
Partition 4 does not end on cylinder boundary.
/dev/sda5           42558       43778     9798656   82  Linux swap / Solaris

Disk /dev/sdc: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x2550254f

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1   *           1       12748   102398278+   7  HPFS/NTFS
/dev/sdc2           12749       30400   141789690    f  W95 Ext'd (LBA)
/dev/sdc5           12749       30400   141789658+   7  HPFS/NTFS

Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0006d7be

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           1         622     4996183+  83  Linux
/dev/sdb2             623         653      249007+  83  Linux
/dev/sdb3             654         684      249007+  83  Linux
/dev/sdb4             685       60801   482889772    5  Extended
/dev/sdb5             685        1680     8000338+  82  Linux swap / Solaris
/dev/sdb6            1681        2925    10000431   83  Linux
/dev/sdb7            2926       60801   464888938+  83  Linux

Disk /dev/sdd: 2019 MB, 2019557376 bytes
63 heads, 62 sectors/track, 1009 cylinders
Units = cylinders of 3906 * 512 = 1999872 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xbb0eb409

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

   Device Boot      Start         End      Blocks   Id  System
/dev/sdd1   ?      882596     1360489   933323145+  66  Unknown
Partition 1 has different physical/logical beginnings (non-Linux?):
     phys=(1010, 16, 43) logical=(882595, 62, 13)
Partition 1 has different physical/logical endings:
     phys=(906, 97, 3) logical=(260906, 1, 23)
Partition 1 does not end on cylinder boundary.
/dev/sdd2   ?           1           1           0   72  Unknown
Partition 2 has different physical/logical beginnings (non-Linux?):
     phys=(101, 116, 32) logical=(0, 41, 32)
Partition 2 has different physical/logical endings:
     phys=(370, 114, 47) logical=(0, 41, 31)
Partition 2 does not end on cylinder boundary.

Partition table entries are not in disk order
ubuntu@ubuntu:~$