linux - How to recover lost partitions using a bootable pen drive?

I have lost all partitions in my laptop's hard disk recently and its now showing as a raw disk.

I have made a bootable pen drive using Ubuntu-12.04 and trying to recover the lost data using TestDisk.

I have successfully installed the software and now when I'm running it, am getting this error.

testdisk: error while loading shared libraries: libntfs-3g.so.835:
cannot open shared object file: No such file or directory

State of my System Partitions

ubuntu@ubuntu:~$ sudo fdisk -l

Disk /dev/sda: 320.1 GB, 320072933376 bytes 255 heads, 63
sectors/track, 38913 cylinders, total 625142448 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: 0x00000000

Disk /dev/sda doesn't contain a valid partition table

Disk /dev/sdb: 16.0 GB, 16005464064 bytes 64 heads, 32 sectors/track,
15264 cylinders, total 31260672 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:
0x000789f1

Device Boot Start End Blocks Id System
/dev/sdb1 * 32 31260671 15630320 c W95 FAT32
(LBA)

Answer

You need to install the ntfs-3g package, as in sudo apt-get install ntfs-3g.