How to Make an External Monitor the Primary Display (Mac) Cali Lewis April 22, 2012 Tip A Day 4 Comments 15 Shares Google+ 5 Twitter 0 Facebook 10 LinkedIn 0 Reddit 0 Pin It Share 0 Buffer 0 15 Shares × Tip A Day #12 When you plug in an external monitor, and you want to make it the primary monitor, it’s super simple! Requirements: Mac Step 1 Open System Preferences. Click on “Displays” (or just click on the monitor icon in your top dock. Choose “Open Displays Preferences”) Step 2 Click on “Arrangement” Step 3 Move the white bar at the top of one of the displays to your preferred monitor. Now your dock and files will be on that monitor instead. That’s it!! See? Super simple! Learn something new every day! How do YOU do it? We want to hear from you! Send your tricks and suggestions for topics to: Google+ Twitter 15 Shares Google+ 5 Twitter 0 Facebook 10 LinkedIn 0 Reddit 0 Pin It Share 0 Buffer 0 15 Shares × 4 Responses kiwigrunter May 1, 2012 This solves one of my pet peeves every morning when booting my MBA to my old apple Cinema display via the dual DVI dongle. Thx Cali. Amy Soldier April 29, 2012 Yeah, you got it. But if you fiddle with those buttons and sliders in the Preference Pane too long YOU WILL GET CRAMPS IN YOUR HANDS! Ask me how I know … ! Macsessed April 22, 2012 Great tip! One thing to look out for though – if the displays are positioned above and below each other in the preferences (rather than side by side) the menu will move, but the dock will always remain on the lowest display. JB April 22, 2012 good tip, is there a way to add a space/desktop and keep it present in a certain monitor? So i can have multiple desktops open in each monitor.