Recovering disk partitions on a corrupted hard disk is a dangerous process. You may even use one of the greatest tools and be sure in your deeds, you are still risking to waste your info. Changes that may be made to the damaged drive are irrevocable. You should bear in mind that it is rather easy to destroy the structure of essential info about your disk. Firstly the backup must be created before the start of the recovery process.
You can find the other method of file recovery procedure that can be even safer and easier and it does not need to have substitute. There is a system of complete double snapshot that you may apply to your drive or the partition that is being repaired. After that you can do a repairing with the various methods on this snapshot for as many times as you need. This is 1 of the abilities of data recovery software.