For the PC equivalent, visit our Running ScanDisk & Defrag guide.

Many common hard drive or OS problems on a Mac can be resolved by repairing your disk permissions. For OS X 10.10 Yosemite and earlier, please use the steps below. For OS X El Capitan and up, these steps are not necessary.

Disk Permissions

Repairing disk permissions can help reset all permissions that may interfere with installation, patching, or game play.

  1. Navigate to /Applications/Utilities/ and open Disk Utility.
  2. Select the hard drive the game is installed on.
  3. Select the First Aid option.
  4. Click on the Repair Disk Permissions button.