What Is TestDisk?

TestDisk is a gratis open-source data restoration program. Its main objective is to help you reclaim vanished volumes and revive drives that will not boot, whether the cause is defective applications, targeted malicious code, or plain human slip-ups—like unintentionally erasing a partition map. Working at the partition-map and file-system levels, it has earned the trust of IT professionals, hardware specialists, and advanced users around the world.

Primary benefits:

Powerful partition map reconstruction and erased volume retrieval, bringing your data back within reach.
Startup sector rehabilitation: rebuild NTFS boot areas and restore FAT startup regions from existing backups when reachable.
Ideal for extracting information from damaged volume layouts, mistaken repartitioning, or corrupted maps.
Compact and self-contained: needs no installation; launch from any folder or USB stick.
Recover and duplicate items from FAT, exFAT, NTFS, and ext2 volumes as long as the file system remains readable.
Released under the GPL license: codebase is open for public scrutiny, ensuring transparency and reliability.
Provided for Windows, macOS, and Linux environments.

Who gains the most from TestDisk?

IT technicians and system administrators: Reclaim missing volumes, repair boot areas, and re-establish access to compromised drives on client machines.
Advanced users: Follow detailed instructions to inspect drive geometry, scan for lost structures, and commit corrected partition maps.
Careful newcomers: With sufficient documentation, the generate-log, pick-drive, inspect, and search workflow is manageable.
Critical rescue situations: When a drive suddenly becomes unbootable or volumes disappear following software faults or operator mistakes, TestDisk is usually the first tool to try.

Technical details:

Compatible with Intel (MBR), GPT, Mac, BSD, and Sun partition map formats.
Text-based interface: fully keyboard-navigated inside a terminal; no mouse-driven graphical UI.
Rebuilds FAT12/FAT16/FAT32 and NTFS startup sectors; repairs FAT allocation tables.
Restores and copies items from erased or damaged volumes on supported file systems.
Produces a diagnostic log to assist with problem resolution and record-keeping; always obtain builds from official or verified sources.

To obtain TestDisk, visit the acquisition page or return to the home page.