I installed the latest Apple update to my Mac Desktop and it won't reboot. I have to use Command R and it's giving me options for external HD's only. How can I access my Mac HD?
How can I get back into my Mac Desktop after it failed to reboot after installing Apples's latest 16 IOS UPDATE?
I'm not certain the IOS I'm using but the installation was version 16???
iMac 27″