TestDisk is a powerful data recovery utility! It was primarily designed to help recover lost partitions and/or make non-booting disks bootable again when these symptoms are caused by faulty software, certain types of viruses or human error (such as accidentally erasing your Partition Table).
A very handy and simple tool - TestDisk has features for both novices and experts. For those who know little or nothing about data recovery techniques, TestDisk can be used to collect detailed information about a non-booting drive which can then be sent to a tech for further analysis. Those more familiar with such procedures should find TestDisk a handy tool in performing onsite recovery.
I can assure you of its simplicity. It is very simple to use this software and that is what I liked most about it. It does what its supposed to do and best of all without knowing too much about how it does. I tested it with a 1GB USB drive containing picture files (all I GB of it). I had deleted the files and was still able to get them all back safe and sound once I ran TestDisk. It has versions for quite a few of the operating systems so it should not be difficult to find a copy of it for your platform.
TestDisk is OpenSource software and is licensed under the GNU Public License.