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When satisfied with the new primary display setting, close the " System Preferences" to keep the preferences set. Notice the red border that forms around the new primary screen as you drag the white bar into the arrangement, this helps you determine which screen is being used as the primary screen.Īfter you release the white bar onto the other blue screen representation, the screens of both displays will flicker on and off briefly and the video output will adjust to accommodate the new settings. Open " System Preferences" from the Apple menuĬlick and hold the white bar at the top of the current primary display, this white bar represents the menu bar on your desktop.ĭrag the white bar across to the other monitor you want to set as the new primary display for your Mac. In the case of macOS computers, the multiple monitors are not displayed with numbers, but rather with a white banner on top of the main display, which you can move between the displays to change which one is the main display. Please note that for Windows 7, it is expected that the main display will be mirrored, not the secondary one.
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