27 inch mid-2010 2.93GHz iMac goes to a black screen after restart command from App Store. Manually restarts fine, but without update installed. Your thoughts?
I'm having a difficulty with the 10.13.6 17G8037 update. After clicking update and then attempting to restart, the update is not active(i.e. I'm still running 17G8020).
Help(?)
Cheers,
Alan Tomlinson