TestDisk

TestDisk 7.3 by CGSecurity is a cross-platform data-recovery utility whose primary purpose is to locate and restore lost disk partitions and to repair boot sectors that prevent drives from starting, thereby rescuing systems that otherwise refuse to load. Released as open source under the GNU GPL, the program is frequently deployed when accidental deletion, virus activity, file-system corruption, or partition-table damage renders entire volumes invisible to the operating system; it is equally effective on traditional rotating hard disks, SSDs, external USB enclosures, SD cards, and most forms of removable media. TestDisk analyses the raw geometry of a drive, compares existing structures with multiple backup signatures, and can rewrite master boot records, FAT32/NTFS/ext boot sectors, and GUID partition tables without modifying user files, making non-booting disks bootable again while keeping original data intact. Because it operates from a command-line interface and includes a non-destructive read-only mode, technicians often run it from live Linux or WinPE environments to preview recoverable partitions before committing changes, and the companion PhotoRec component can extract individual files when partition repair is impossible. The utility supports Apple HFS+, exFAT, ReiserFS, and LUKS-encrypted volumes among dozens of other formats, and its portability allows it to be launched from a USB stick when the host OS cannot start. Available versions span 7.3, 7.2, and 7.1, each refining file-system coverage and 64-bit UEFI compatibility. TestDisk is available for free on get.nero.com, with downloads provided via trusted Windows package sources such as winget, always delivering the latest version and supporting batch installation of multiple applications.

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