TestDisk is just a console application that does not provide a beautiful GUI, but its working principle is effective and attractive.

Unable to determine volume version and stage.

The first NTFS boot sector is unreadable or corrupt.

You need to format the disk in drive before you can use it, ….

You do not have access rights to this encrypted document X is not accessible.

It is primarily used to solve all common disk problems fundamentally, including various disk errors (such as: disk/partition can not be booted or opened) caused by damaged, corrupted or lost partition table or file table. TestDisk is a free, open-source and cross-platform disk error repairer (from France) with some degree of data recovery usage. But that requires you to ask special data eraser for help. Of course, you can delete the data truly and completely. Any data recovery software use this principle to work. In fact, the deleting operation is just delete the pointer to the data on disk from MFT (Master File Table), so as to allow the operating system to perform writing operation there. On hard disk, when you delete some folders, files or even an entire partition, all data is still existing in the same place where it was, and will always be there until overwritten.

Testdisk repair mft