TestDisk analyzes your partitions in the HD and at the same time it obtains the partitions table information, compare them and if it finds any error... Repairs it!
So easy, you will only have to select the drive you want to analyze and what you want to do. TestDisk can be used by novices and experts thanks to its intuitive interface and its powerful features.
This version is compatible with Windows NT 4/2000/XP and 2003, if you have other OS, please download your version from the official site.