46. How do I repair my disk permissions on OS X?

The Repair Permissions utility corrects the ownership and permissions of certain files, and can occasionally fix odd system problems, such as programs quiting unexpectedly or not launching properly. To repair disk permissions:

  1. Open the Applications | Utilities folder.
  2. Double-click on the DISK UTILITY program.
  3. In the left side of the window, click once on the name of your hard drive.
  4. In the right side of the window, click the "First Aid" tab.
  5. Click the [Repair Disk Permissions] button.

Wait until the repair is complete before quitting the Disk Utility. You can't shut down or restart while the Disk Utility is running, but you can run other programs.


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