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Trouble with Security Update 10.13.6

When I install the update and the computer eventually tries to restart itself, the process gets stuck on the logo screen with the loading bar and all it says is "Restarting". I've left it like this for hours multiple times but it stays this way and the loading screen doesn't change. Anyone else have this problem?

Posted on Feb 16, 2019 8:51 AM

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Question marked as Apple recommended

You can force a shut down by holding the power button for an extended amount say ~8sec.


Then restart your Mac and see where it leaves you—often this is enough.


If you still need to apply the update, do it again from SafeBoot mode


Try a SafeBoot  https://support.apple.com/en-us/HT201262


Takes noticeable longer to get to the login screen, does a 5 minute disk repair before it fully boots up, and certain system caches, dynamic loader cache, etc. get cleared and rebuilt.

Posted on Feb 16, 2019 8:56 AM

1 reply
Question marked as Apple recommended

Feb 16, 2019 8:56 AM in response to appleguy112

You can force a shut down by holding the power button for an extended amount say ~8sec.


Then restart your Mac and see where it leaves you—often this is enough.


If you still need to apply the update, do it again from SafeBoot mode


Try a SafeBoot  https://support.apple.com/en-us/HT201262


Takes noticeable longer to get to the login screen, does a 5 minute disk repair before it fully boots up, and certain system caches, dynamic loader cache, etc. get cleared and rebuilt.

Trouble with Security Update 10.13.6

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