How To: Rotate your MacBook Screen (All versions of OS X)

Here’s how to access the screen rotation option in all versions of Mac OS X:

  1. Launch System Preferences from the Apple menu
  2. Hold down the Command+Option keys and click on the “Display” icon
  3. On the right side of the Display preferences, look for the newly visible ‘Rotation’ drop down menu
  4. Set the rotation you want, in this case it’s likely to rotate 90° for the display to be into a vertical page layout orientation on its side
  5. Close out of System Preferences to have the settings stay in effect