Disk /dev/sda: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000f0565

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1               1          38      305203+  83  Linux
/dev/sda2   *          39        6617    52845817+   7  HPFS/NTFS
/dev/sda3            6618       30401   191044980    5  Extended
/dev/sda5            6618        6623       48163+  83  Linux
/dev/sda6            6624        7352     5855661   82  Linux swap / Solaris
/dev/sda7            7353       30401   185141061   83  Linux

Disk /dev/sdb: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000c2c2b

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *           1      121601   976760001   83  Linux

Disk /dev/sdc: 250.1 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0xdbced770

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1               1          13      102400   17  Hidden HPFS/NTFS
Partition 1 does not end on cylinder boundary.
/dev/sdc2   *          13       12901   103523328    7  HPFS/NTFS
/dev/sdc3           12901       30401   140569280+  83  Linux

Disk /dev/sdd: 2079 MB, 2079850496 bytes
64 heads, 62 sectors/track, 1023 cylinders
Units = cylinders of 3968 * 512 = 2031616 bytes
Disk identifier: 0x8ef631df

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

   Device Boot      Start         End      Blocks   Id  System
/dev/sdd1   ?      532394     1026030   979374166   66  Unknown
Partition 1 has different physical/logical beginnings (non-Linux?):
     phys=(734, 123, 14) logical=(532393, 10, 21)
Partition 1 has different physical/logical endings:
     phys=(120, 143, 6) logical=(1026029, 21, 22)
Partition 1 does not end on cylinder boundary.
/dev/sdd2   ?      869293     1863330  1972168331    7  HPFS/NTFS
Partition 2 has different physical/logical beginnings (non-Linux?):
     phys=(187, 180, 14) logical=(869292, 36, 52)
Partition 2 has different physical/logical endings:
     phys=(784, 0, 13) logical=(1863329, 2, 5)
Partition 2 does not end on cylinder boundary.
/dev/sdd3   ?      826566     1318870   976730017   7d  Unknown
Partition 3 has different physical/logical beginnings (non-Linux?):
     phys=(252, 59, 46) logical=(826565, 60, 39)
Partition 3 has different physical/logical endings:
     phys=(139, 118, 4) logical=(1318869, 24, 32)
Partition 3 does not end on cylinder boundary.
/dev/sdd4   ?        8853       10951     4161536   6f  Unknown
Partition 4 has different physical/logical beginnings (non-Linux?):
     phys=(370, 101, 50) logical=(8852, 41, 19)
Partition 4 has different physical/logical endings:
     phys=(10, 114, 13) logical=(10950, 12, 24)
Partition 4 does not end on cylinder boundary.

Partition table entries are not in disk order