target display mode
Hello! I am trying to use my mid 2010 21.5" iMac with High Sierra 10.13.6 as a target display for my Mac Book Air 2017 also with High Sierra 10.13.6. I have a mini display cable connecting both computers, but the target display does not seem to work. I tried all the tips from the website, but still no luck. Anything else you would recommend?
iMac 21.5″, macOS 10.13