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If you get a message that your disk can’t be repaired on Mac

If you get a message saying macOS can’t repair a disk, you may need to reformat it or replace it.

Back up as much of your data as possible, erase and reformat the disk, then restore your backed up data. For information about backing up data, see Ways to back up or protect your files.
If you continue to have problems with your disk, it may be physically damaged, and you may need to replace it. For service information, see Find out how to service or repair your Mac.

See alsoSolve problems with a disk using Disk Utility on Mac

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