My iMac is frozen and keyboard nor mouse are working
did the recommended upgrade on my iMac and it is about 7/8ths done and frozen for over 24 hours. Keyboard and mouse do not work. How do I get it working?
iMac 27", macOS 10.14
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Press and hold down the Power button until the computer shuts down. Wait 30 seconds.
Repair the Drive for El Capitan or Later
- Restart the computer. Immediately, at or before the chime, hold down the Command and R keys until the Apple logo and progress bar appear. Wait until the Utility Menu appears.
- Select Disk Utility and press the Continue button.
- Then select the indented (usually, Macintosh HD) volume entry from the side list.
- Click on the First Aid button in the toolbar and wait for the Done button to activate. Click on it, then quit Disk Utility.
- Select Restart from the Apple menu.
- Download and install the MacOS Catalina 10.15.2 Combo Update again.