How to repair a Mac storage device with Disk Utility — by Apple Support

intermediatepageLink only (©)

Describes using First Aid in Disk Utility to find and fix format and directory errors that cause odd behaviour. Advises backing up first and working up the sidebar from volumes to the device.

Quick steps

  1. Before you begin
  2. Open Disk Utility
  3. Use First Aid
  4. If Disk Utility can't repair or see the device

Paraphrased from the source. Menus can differ by version, so check the original for full details.

Read the full article on support.apple.com

Source: How to repair a Mac storage device with Disk Utility by Apple Support. Licence: Link only (©).

Source reviewed
2026-11-02
Link checked
2026-11-02
Tested hands-on
Not by Oddbyte.Me

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