Fixing the macOS 10.13.6 Security Update 2019-007 Black Screen

My iMac 27-inch (mid-2011) is still working well. For some unknown reason(s), I’ve been unable to apply the macOS 10.13.6 (High Sierra) Security Update 2019-007. It will simply “halt” during the reboot phase, leaving me with a black screen with cursor. The most irritating part is that I cannot uninstall nor (re)install the Security Update and it continues to halt my iMac at the black screen at every shutdown or reboot. I had to force shutdown by holding on the power button every single time until I came across a fix for failed Security Updates on Apple’s forum.

I tried using OynX‘s maintenance and it doesn’t fix the problem. However, the above documented fix does! The most amazing part is that the fix is still applicable after more than a year! The commands are pretty harmless. Below, I try to give a glimpse of what each of the command does

Fixing the Apple Security Update Black Screen

To fix the Apple Security Update black screen with cursor problem, pull up a Terminal and run the following commands.


Treat shadowandy!

If these step-by-step guides have been very helpful to you and saved you a lot of time, please consider treating shadowandy to a cup of Starbucks.  

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