DiskWarrior 5.2 is compatible with macOS 10.15 Catalina*. If you have an earlier version of DiskWarrior 5, please download the update to DiskWarrior 5.2. DiskWarrior Recovery Maker 1.3 is not compatible and has been updated to version 1.4. Please visit the DiskWarrior 5.2 & APFS page for more information.

* Note: When rebuilding external HFS+ (macOS Extended) Volumes.