I have a problem with my iMac. Yesterday I started an upgrade to Big Sur OS, to run overnight. Today it is “running Setup Assistant, but all that appears to be happening is the little coloured disc is spinning, so I can’t do anything. The screen is b
I have a problem with my iMac. Yesterday I started an upgrade to Big Sur OS, to run overnight. Today it is “running Setup Assistant, but all that appears to be happening is the little coloured disc is spinning, so I can’t do anything. The screen is black with the top menu strip grey, with white menu items with Setup Assistant.
iMac 21.5″, macOS 11.2
