hier is een quote van het stuk uit de documentatie
TestDisk queries the BIOS ( DOS/Win9x) or the OS ( Linux, FreeBSD) in order to find the Hard Disks and their characteristics ( LBA size and CHS geometry). TestDisk does a quick check of your disk's structure and compares it with your Partition Table for entry errors. If the Partition Table has entry errors, TestDisk can repair them. If you have missing partitions or a completely empty Partition Table, TestDisk can search for partitions and create a new Table or even a new MBR if necessary.
However, it's up to the user to look over the list of possible partitions found by TestDisk and to select the one(s) which were being used just before the drive failed to boot or the partition(s) were lost. In some cases, especially after initiating a detailed search for lost partitions, TestDisk may show partition data which is simply from the remnants of a partition that had been deleted and overwritten long ago. Because of this possibility, one should always 1) Give each new partition a unique label name, and 2) Whenever you decide to delete all existing partitions on a drive in order to 'start all over again' to 'zero-out' every byte on the disk first. This procedure will remove all remnants of previously existing partitions (manufacturers often include routines to 'zero-out' a drive in a utility program downloads section on their web sites). If one isn't available, or if you're not removing all of the partitions from a drive, you could at least use a 'wipe free space' utility after installing a new OS or resizing a drive's partitions.
TestDisk has features for both novices and experts. For those who know little or nothing about data recovery techniques, the command line parameters /log and /debug 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.
Lijkt me al met al een zeer handige tooltje.
Zijn er al tweakers die er gebruik van maken?