TestDisk is a powerful open-source data recovery tool designed to help recover lost partitions and make non-booting disks bootable again. Originally developed by Christophe Grenier, it supports a wide range of file systems including FAT, NTFS, exFAT, ext2/3/4, and more. TestDisk works by analyzing the structure of a damaged or corrupted disk and attempting to repair partition tables or recover deleted partitions. It operates through a command-line interface, making it more suited for advanced users, though its guided menus help simplify the process. TestDisk is available on multiple platforms, including Windows, Linux, and macOS, and is widely used by IT professionals and forensic analysts due to its reliability and effectiveness in data recovery scenarios.
