Built directly into macOS and the only tool officially recommended for checking modern system volumes for errors.

A key detail for modern Mac users is that DiskWarrior cannot currently rebuild the startup disk of a Mac formatted with APFS (the default for all modern Macs with SSDs). It remains an industry leader for repairing HFS+ (Mac OS Extended) formatted external drives and older startup disks. Where to Get Official DiskWarrior

Despite what some download sites might claim, there is currently .

The current release is DiskWarrior 5.3 , which was updated to support Apple Silicon (M1/M2/M3 chips).

If you are trying to fix a modern APFS-formatted Mac startup disk, professional technicians often recommend: