I have an iMac 27 inch with a 22 inch monitor to the left and a 23 inch monitor to the right. I want the dock to be in the middle and want all monitors to be arranged from left to right. I keep my dock on the left hand side of my monitor. So when I position my monitors left to right it moves to the most left monitor.

Is there a way I can force the dock to stay on the middle monitor and not move to the left monitor?

Software version 10.11.1

  • 1
    can you state the software version of your mac? e.g. osx 10.9.2 – Brick Nov 29 '15 at 12:15
  • Have you dragged the monitors to the desired positions? (The blue squares can be arranged as desired.) – bjbk Nov 29 '15 at 22:56
  • Ahhh… now it makes sense… but the answer is now "No, it cannot be done" I'm afraid. The dock would have nowhere to 'sit'. You could try looking at something like DragThing instead, which can be anchored anywhere. – Tetsujin Dec 22 '15 at 8:19
  • A third party Dock replacement called uBar can do this. Additionally it can be visible in all screens. Obviously it's slightly different from the native Dock and not very cheap either. – Joonas Oct 25 '17 at 10:39

Switch off 'Displays have separate Spaces' in System Prefs > Mission control.

enter image description here

Then set the middle monitor to be the primary in
System prefs > Displays > Arrangement
by dragging the menu bar to that monitor

enter image description here

After the question edit -
I'm afraid if you want the Dock on the left edge there is no way to achieve this. The above solution only applies if you have the Dock at the bottom, otherwise it has nowhere to 'sit' & will always go to the first 'edge' it can find, which in this case is the left side of the left monitor.

You could try looking at something like DragThing instead, which can be anchored anywhere. I actually anchor mine to the right of my left monitor on a 2-screen setup, which effectively puts it where the red bar is on this image.

Late Edit
DragThing, after 20 years of sterling service, will no longer be supported after Mojave & is no longer available for purchase.

enter image description here

  • This didn't produce what I am looking for. Thanks! – Tone Nov 29 '15 at 19:44
  • 1
    Then edit your question to be more specific. – Tetsujin Nov 29 '15 at 19:48
  • I updated my question. – Tone Dec 21 '15 at 20:57

If you want to have your dock on the right or left side, there is an workaround to achieve this by arranging your monitors diagonally. It's not the best solution as you have to move your mouse to the corner of the screen to go to the other space but at least the dock is where you want it.

Credit goes to this answer here: https://apple.stackexchange.com/a/252994/62200

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