To start up into Safe Mode to Safe Boot do this

  1. Be sure the computer is shut down.
  2. Press the power button.
  3. Immediately after you hear the startup tone, press and hold the Shift key.

Note: The Shift key should be held as soon as possible after the startup tone but not before.

4. Release the Shift key when you see the screen with the gray Apple and progress indicator (looks like a spinning gear). After startup, the words "Safe Boot" appear in red letters under the Apple logo on the Mac OS X login screen.

Note: The Safe Boot startup process takes longer than a normal startup. It can be quite long (several minutes) depending on the amount of time it takes to check and repair the directory (if needed).

5. To exit Safe Mode, restart the computer normally, without holding down any keys during startup.

Knowledge Base Articles

These troubleshooting articles can be searched from http://www.apple.com/support.

  • 107392 What is Safe Boot, Safe Mode?
  • 107394 Safe Boot Takes Longer Than Normal Startup
  • 106692 Mac OS X: Troubleshooting Installation and Software Updates
  • 106693 Mac OS X: Troubleshooting Installation From CD-ROM

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