I have the two computers connected with the Thunderbolt cord. But when I hit F2 on the 2011 iMac, nothing happens. Well I shouldn't say nothing happens, the screen flashes as if I were taking a screen grab.
I am using the Thunderbolt Cable, connected by the Thunderbolt 3 USC-C to Tunderbolt 2 Adapter, but am not having any luck.
The 2011 is running on El Capitan and the MacBook is running on Mojave.
Thanks for your help!