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How to Use OS X Boot Options to Troubleshoot Your Mac

by Cory Bohon 1Comment

There are times when your Mac may misbehave and refuse to boot into OS X. You may get a sad Mac face, an audible beep, or another ailment keeping your Mac from properly booting. When this happens, you can troubleshoot your Mac by using boot options to run an Apple Hardware Test, or booting with extensions disabled. Sometimes, launching your Mac this way can help save you a trip to the Apple Store.

Don’t panic when this happens to your Mac. Instead, turn to this guide in which we explain all of the various boot options in OS X that may help return your Mac to normal.

1. Press C During Startup

Booting from a CD? You can hold down the C key on your keyboard to instantly boot to a Mac OS X or other bootable disc in your Mac.

2. Press D During Startup

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