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While in Target Display Mode, only the keyboard’s display brightness, volume, and Target Display Mode key combinations are active. Things to Consider The iMac will continue to run its operating system and any applications that were open when it entered Target Display Mode. Use another keyboard or the original keyboard that came with your Mac. If you’re currently logged in to the iMac you intend to use as a display, log out and return to the normal login screen.Ī few third-party keyboards don’t send the Command+F2 correctly.
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If the iMac being used as a display is currently booted from a Windows volume, restart it from the normal Mac startup drive.
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Make sure the Mini DisplayPort or Thunderbolt cable is connected correctly. If Target Display Mode isn’t functioning as expected, try these things to help make the connection. What to Do If Target Display Mode Doesn’t Work
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When you are ready to exit Target Display Mode, manually turn off the feature by pressing the Command+F2 keyboard combination or by disconnecting the iMac from the source Mac. The iMac displays the screen contents of the source Mac. The connection typically happens automatically, but if your iMac doesn’t automatically enter Target Display Mode, press Command+F2 on the iMac to manually enter Target Display Mode. Turn on the iMac that will be used as the display and the Mac that will be the source.Ĭonnect the two Macs with either a Mini DisplayPort cable or a Thunderbolt cable. If you have a suitable iMac model, appropriate cables, and the specified operating system, you can set up Target Display Mode.
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How to Enable and Disable Target Display Mode The iMac no longer supports Target Display Mode, but several models sold in late 2009 through 2014 support the feature. The source Mac must have macOS Catalina (10.15) or earlier installed. The iMac used as a display must be running macOS High Sierra (10.13.6) or earlier. You need the proper ports and cables to make the connection between the two Macs. What to Do With an Old iMac 10 Things to Know When Buying an Old, Used Mac What You Need to Use Your iMac as a Monitorĭisplay mode-compatible 27-inch iMacs have either a bi-directional Mini DisplayPort or a Thunderbolt port (depending on the model). Target Display Mode is only available on specific iMacs made between late 20. If you have one of the iMacs with Target Display Mode, your Mac mini or another Mac can make use of your old 27-inch iMac as a display. However, by the time Apple released the 2014-2015 Retina Display iMacs, they no longer supported the feature. The 27-inch iMacs introduced in late 2009 included the first version of Target Display Mode, a feature that allowed iMacs to be used as displays for other Apple devices. Some iMacs can pull double duty as a monitor for other Macs