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Mac OS High Sierra 10.13 Slow boot up on Macboo...

I own a Macbook Air 13 inch (late 2015)Just a few weeks ago I updated to the latest Mac OS High Sierra, then days later, I updated further to the latest 10.!3 supplemental update. I just noticed that before, it took only 15 seconds for my laptop to boot-up (it took only 15secs for the loading bar to finish), after the update, it now takes roughly 20-22 seconds. How can you fix this? or will a later update do? 

That's not a huge difference. If you like run EtreCheck. It is a diagnostic tool that's very useful to us in finding problems, although I doubt there will be anything obvious. After it runs post the log file here. It will contain no personal information.

最後更新：2017-10-18 00:46:20

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