How to move Macintosh bottom dock bar from one screen to another?

The Dock is on the bottom screen if the arrangement makes them overlap vertically.

Otherwise, it's on the screen with the menu bar, e.g. in the following two arrangements:

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AFAICT, the reason is that the Dock requires you to move the pointer to the screen edge if it's hiding, and that only works for the bottom-most screen.

To move the dock to a different monitor on a mac we can place the cursor on that monitor ( ensure there is a click on the monitor so the focus is on that monitor) &

Simply move the cursor to the bottom of that monitor & hold it for 2 or 3 seconds and the dock will move.

This is slightly different from a pc where we can click & drag the task bar from monitor to monitor.

Hope this helps.

You can move the dock with the menubar from the top of the main monitor, if you don't mind that.

At the Display Panel, you can drag the menubar and drop it onto the secondary monitor, and you can see the dock has also been moved to the same screen.

Just be careful that you click on the menubar not the whole screen!

Similar to this tutorial: http://mcreative.tistory.com/148 (in Korean)