Target Display Mode
I've been trying to follow the Target Display Mode directions for using my mid-2011 27" iMac, running OS High Sierra 10.13.6, as a display for my 2017 13" MacBook Air, connecting them with a Thunderbolt cable. I can't get Target Display Mode to work using these directions, including all the "other solutions." The best I can get is the desktop picture from my other Mac, but none of the applications will show. Any ideas?
iMac 27″, macOS 10.13