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Make sure that your imac is turned on, and the other mac is logged in to a macos user account. Display so pleasant to use you may decide to use it as an external monitor for. Not every question will be answered, we don’t reply to email, and we cannot provide direct troubleshooting advice. The 2019 imac is not supported for target display mode. If not, we’re always looking for new problems to solve! Email yours to screen captures as appropriate, and whether you want your full name used. We’ve compiled a list of the questions we get asked most frequently along with answers and links to columns: read our super FAQ to see if your question is covered. This Mac 911 article is in response to a question submitted by Macworld reader Rick. If you want to use your iMac as a monitor for another Mac, you can use the same Mini DisplayPort or Thunderbolt port to connect to it as a video input.
Use imac as second monitor thunderbolt update#
(One reader said that it only worked after pressing Command-F2 repeatedly on the iMac, sometimes a few seconds apart, which may have overcome the iMac’s resistance.) Apple only supports Catalina and earlier with this feature, which means that the company could fully disable it in an update to Big Sur without contradicting its support documents.
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However, we’ve also heard from other readers who were frustrated they could not. This shall also disable all the keyboard keys except command, F2, Fn, Volume, and brightness control keys. For manual activation, press the Command and F2 or Command, Fn, and F2 keys on the keyboard connected to iMac. Update: A few readers with Big Sur installed have written in to say that they can, in fact, still control an iMac with their Big Sur Mac. However, it may sometimes rely on manual activation depending on your PC or iMac version and model.