High Sierra install is frozen

I’ve been running Sierra on a mid 2010 iMac - tried to upgrade to High Sierra last night. Download went fine - install seemed to be proceeding well. However when the bar was about 95% of the way across, it just stopped. Has been this way for about 10 hours now. Computer is getting pretty warm (hot). Would you just shut it down? How do I know if something is going on still? Would you shut it down and just try to restart it? Or would you first try to restart in Safe Mode?


Not sure what is going on, but not thrilled. I do have a Time Machine backup.


Thanks,

Mark

Posted on Sep 26, 2017 6:33 AM

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Posted on Dec 15, 2017 1:29 PM

Hi, I hope despite it being a few months that this answer will help some of you. I called Apple support and they say they monitor this forum - but no one from Apple has answered in about 3 months so I have my doubts. Anyway I mention that because on the phone the second tier specialist said that this was a good fix and that I should post it.


You should make a copy of the High Sierra installer on a flash drive and use that to install. High Sierra can be downloaded from the App store, but NOT from the update sections on any of the devices. Those aren't full copies. Make sure you've found the full install in the app store and select "download" underneath the icon.


Copy this to a flash drive or external hard drive.


Eject the drive and insert it into your troublesome computer. Disconnect your internet connection. Open the installer, and follow the instructions. Previous to my doing this, the install froze at 1 hour and 21 minutes. Using this method, the install took a total of 21 minutes. You do not need an internet connection.


Good luck, hope it helps,

Jen

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High Sierra install is frozen

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