Access the functionality repair toolset for your Mac. Run a scan of the drives an directories on your machine and detect damaged or corrupted partitions, as well as errors preventing discs and drives from booting. Perform recovery operations and view status reports.
Download of TestDisk 7.3 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software relates to System Tools. This free Mac app was originally created by Christophe Grenier. We recommend checking the downloaded files with any free antivirus.
From the developer:
TestDisk is a data recovery software app primarily designed to help you recover lost partitions and/or make non-booting disks bootable again when these symptoms are caused by certain types of viruses or human error. Partition table recovery using TestDisk is really easy.
You may want to check out more software for Mac, such as Dock Delight, Snow Checker or SBSystemPrefs, which might be related to TestDisk.