Untitled

Disk /dev/sdc: 1000.2 GB, 1000204885504 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525167 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: 0x6e697373

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

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1   ?  1936269394  3772285809   918008208   4f  QNX4.x 3rd part
/dev/sdc2   ?  1917848077  2462285169   272218546+  73  Unknown
/dev/sdc3   ?  1818575915  2362751050   272087568   2b  Unknown
/dev/sdc4   ?  2844524554  2844579527       27487   61  SpeedStor