Apple Event: May 7th at 7 am PT

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Level 1

18 points

Catalina 10.15.4 Supplemental Update Has Issues

The 8 April 2020 Supplemental Update for Catalina 10.15.4 brought the system down for a few hours. Since the screen only showed a white apple on the screen for the whole time I shut it down and restarted it. I got a thick white circle with a thick white line through it in the middle of the screen, the same size as the apple usually is. Repeated shut downs did nothing. Could not go to safe mode without the circle and line so I went to Recovery Mode, ran the Disk Utilities First Aid and then rebooted again. My screen came up and I was able to sign in. I had a notice that the update was available for installation. I am not going to do that since it appears it is not going to work on my iMac (Retina 5K, 27-inch, 2017). Is this a temporary issue or should I ignore all further updates?

iMac 27" 5K, 10.15

Posted on Apr 8, 2020 7:42 PM

Best reply

David Bisi

Level 2

159 points

Posted on Apr 10, 2020 10:18 AM

I have the exact same model iMac as you, and the supplemental update was also a problem for me. Had the black boot screen with white Apple logo up for an hour and a half (no progress bar) before I shut it down by holding in the power button and pulled the plug from the back. After a minute, plugged it back in and powered it up. This time got an Apple logo with a progress bar that eventually showed 30 minutes estimated, quickly followed by a 15 minute estimate, and right around that time the installation completed and I could log in. And every Catalina update gives me that Relocated Items folder, even though I delete the alias and the actual folder.

Catalina has been the first macOS that has been a problem for me, but a spotty problem. The first installation was a nightmare, but the other updates all went as expected, up until this supplemental update.

View in context

Catalina 10.15.4 Supplemental Update Has Issues

Similar questions