Ask Different is a question and answer site for power users of Apple hardware and software. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

When I'm lecturing I want the exact same stuff that shows on my MacBook Air's screen to show on the external screen. How do I do that?

For just slides the regular settings are fine, but when I'm coding/compiling/debugging live they are a hassle like no other.

(Ps. would like suggestions for better titles/tags in the comments. Or if your rep is high enough just go ahead and modify whatever you'd like.)

share|improve this question
up vote 1 down vote accepted

You did not specify the OS you are using but in general in the display preferences (System Preferences → Display) you should look for a mirroring option.

Screenshot for Mountain Lion:

enter image description here

share|improve this answer
Mountain Lion- thanks. This stuff is too easy on a Mac. – The Unfun Cat Sep 6 '12 at 9:11

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.