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 Jan 19, 2018 11:39 AM

Success: I resolved this exact problem. When trying to install High Sierra, my Mac was stuck the black startup screen, stalling at either 90% or 100% completion between restarts.


I managed to get High Sierra installed without losing any of my files. Here is how I did it.


Failures:

  • Resetting a billion times.
  • Resetting PRAM.
  • Resetting CMD.
  • Using Safe Mode.
  • Using Recovery Mode (It would freeze upon attempting to re-install the OS, and Disk Utility couldn't detect my drive).
  • Using Internet Recovery Mode (Same as above).
  • Looking at Verbose startup mode -- it said "Error 13" on the drive IO.
  • Talking to the "geniuses" at an Apple Bar, as well as online tech support. They suggested either formatting my drive, or even buying a new drive. They had no inclination to dig into the problem and actually figure it out and fix it.

What worked:

  • I put my Mac in Target Disk mode (hold down T upon startup).
  • I connected my Macbook to another Macbook using a Thunderbolt cable. The other Macbook must be running High Sierra. If you don't have a friend with a Macbook, you might be sh*t out of luck.
  • I made a backup of my files, in case things went poorly. My Macbook appeared as a drive on my friend's High Sierra computer, but dragging files over in Finder resulted in an error. I had to use Terminal and "cp" my files over.
  • I opened Disk Utility on my friend's computer, and here are the steps I took:
    • View -> Show All Devices
    • My Macbook showed up, along with various "Container disks".
    • I ran First Aid/Repair on all of the various things I saw. Some of them threw errors and refused to repair, but that seems to have been okay.
  • I then created a bootable USB installer as per How to create a bootable installer for macOS - Apple Support using my friend's computer.
  • I ejected my Mac, disconnected it from the other computer, and booted my Mac onto the USB booter. I ran the installer from the USB stick, and it succeeded! After it completed, High Sierra booted up, and all of my files were present, unharmed.

This was a huge headache for me, and I hope that this writeup helps save your files. Don't necessarily listen to the Apple "geniuses" who say that a format is necessary.

97 replies

Jan 4, 2018 2:40 AM in response to Captain Brillo

I am only back up and running after managing to restore back to 10.12.6 as for the upgrade I have not seen a reason why the upgrade completely screwed up my iMac in the first place. Unless Apple say hey the upgrade now works on any working model even ones with an inbuilt Sata hard drive and running 10.12.6 I will not chance trying to upgrade again. Always run the latest version but this time I am scared of losing my machine again and it really took a long time to get the restore screen up no idea why it must have been a real screw up on the update. If you have a backup machine and can afford to screw up your one again try 10.13.3 and lets us know how you get on.

Good luck

Feb 4, 2018 12:50 AM in response to pr1uk

Well any news from Apple as anyone successfully installed High Sierra on an iMac mid 2010 with a normal beta hard drive and running 10.12.6 yet. I tried twice each time it not only froze it was very hard to restore losing my trusted iMac for a couple of days. Still not seen anything from Apple to say the latest upgrade will install faultlessly on my iMac yet so I take it they have not resolved this issue as yet. Hate Windows but Microsoft must be laughing their heads off I know my mate does when he brings his Windows laptop over and says at least I can upgrade :-)


Peter

Feb 6, 2018 7:04 PM in response to pr1uk

Well any news from Apple as anyone successfully installed High Sierra on an iMac mid 2010 with a normal beta hard drive and running 10.12.6 yet. I tried twice each time it not only froze it was very hard to restore losing my trusted iMac for a couple of days. Still not seen anything from Apple to say the latest upgrade will install faultlessly on my iMac yet so I take it they have not resolved this issue as yet. Hate Windows but Microsoft must be laughing their heads off I know my mate does when he brings his Windows laptop over and says at least I can upgrade :-)


Peter

Feb 9, 2018 12:22 AM in response to pr1uk

Apologies in advance - I'm not super tech savvy. I started the High Sierra download today and hit the same problem. Frozen progress bar. Couldn't start in safe or recovery mode. Manually shut MacbookPro down and restarted about 3 times. On the 4th start up, it returned me to the Sierra install page, asking me to pick my language before continuing. I noticed the little Apple logo on the top left, clicked on it, then clicked on "start up disk". I then clicked on the hard drive icon, clicked OK, and was brought back to my old desk top! I was over the moon to see the familiar snow capped mountain range. The internet is running slow but that might be neither here nor there.


So my questions are: what happened to the High Sierra install? Is it still in progress? Will it begin again the next time I turn my laptop on? Is there something I can do to ensure it doesn't install? Am I back to full usage of my former OS?


Any help much appreciated

Feb 10, 2018 12:07 AM in response to travis.detert

I agree with you sir why as Apple not come clean and addressed this issue they have an update that not only does not work on all machines, but almost makes it hard to recover.

Come clean Apple tell us

IF your working on this issue ?

IF you think the issue will be resolved ?

IF some may never be able to update ?

If this was a Microsoft screw up I would be laughing my head off as it is my friend with a PC is laughing at Apple and I don't blame him

Mar 5, 2018 1:47 AM in response to ste.maxe

It's cheaper for Apple to no longer care about issues like this. Or about how utterly un-user friendly they've become. That approach works during boom times, but it will catch up with them one day. They've already sown SO much ill will in consumers, it's only a matter of time.


I was fortunate: after turning my Macbook on and off 5 times, it took me back to the start of the High Sierra install, and I was able to stop it dead in its tracks. Won't go near it with a barge pole now. Hope others find a way through this problem.

Mar 5, 2018 9:42 AM in response to ste.maxe

I read a work around something to do with format your hard drive bake on gas mark 5 then make a boot disk etc etc. When I see there is an upgrade would you like to install it now and you chose now, it just works and does not leave you without a Mac for 2 days. Then after 2 days you end up back where you were before we the end user expects upgrades to just work like Microsoft ones

Mar 6, 2018 12:54 PM in response to ATHiker95

Wish I had read this thread before attempting to install High Sierra. I was in a continual loop of "restart to install". I had to take it in for repair and pay a nice chunk of change. The OS needed to be reinstalled and I lost everything that wasn't backed up on the external drive. Laptop less than 2 yrs. Never had problem with previous Mac. Very disappointed in Apple.

Mar 6, 2018 1:42 PM in response to katy118

I feel for you I just clicked on install and lost my Mac for 2 days and as an OAP I rely on the net for almost everything contact and shopping. The worse thing is Apple not saying that this upgrade will not install on even the machines mentioned on their web page as being upgradable and the fact Apple does not have to guts to admit it's been a total **** up from day one. I believe Microsoft would have pulled the upgrade offline until it was sorted and been more honest to us the people that use their highly priced products.

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High Sierra install is frozen

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