It is rather risky procedure to repair drive partitions on a corrupted hard drive. You can even apply one of the greatest tool sets and be sure in your deeds, you are still risking to waste your data. Alterations made to the corrupted disk are irrevocable; it's really simple to overwrite an important system structure containing vital info about your disk, files and data. There should be created some substitute for your hard drive before the repairing procedure.
There's a different method to make file repairing even more harmless, and without having to backup and repair data shall something go incorrect. You cannot make a backup replica of the drive, but you can create a complete binary snapshot of it or its partition. Then you can persist repairing with diverse approaches for so many times as you like. This is one of the abilities of data recovery software.
