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Progress Bar Stuck on 100% on boot High Sierra

I have a Mac Mini (Late 2012).


Last month I upgraded the memory from 4GB to 16GB and installed macOS High Sierra; am currently on version 10.13.1


Yesterday (11th November 2017) I booted up my MAC at 9 am (ish) with no problems, during which time it successfully backed up twice to Time Machine at 9:15 and 9:50.


I shut down not long after this, then booted up again at about 13:10, and noticed the usual progress bar beneath the apple symbol was taking a particularly long time. I did a hard shut down and restarted, and still it took a long time, so I left it, then after about 20 (far longer than usual) minutes, it reaches 100% and stayed there: no log in screen.


I shut down and tried to reboot in Safe Mode (holding shift after the chime) but this made no difference as I never got to the log in screen.


I reset PRAM/NVRAM by rebooting and holding command+option+P+R at the chime. Nothing.


Reset SMC (unplugged, held power button, released, plugged back in) still no log in screen after 100%


I booted into recovery mode, opened Disk Utility and checked my hard disk. It returned ok with no errors found. Rebooted, still stuck at 100% with no log in screen.


This is where it starts to get scary.


I rebooted back into recovery mode, and reinstalled High Sierra (took about 3 hours), and, incredibly, it DIDN'T FIX THE PROBLEM!!(still can't believe this!!!) After installing, it rebooted, and again after half an hour the progress bar reached 100% and stayed there: no log in screen! How can actually reinstalling the entire operating system NOT FIX a start up problem? Does it not overwrite the system files it needs to reboot? I just don't understand how this is possible!?


I then went to bed and left my MAC on overnight. In the morning (about 7 hours later) still apple symbol with progress bar at 100%; no log in screen.


I booted in Verbose mode (command V) and saw lots of crashed processes "producing too many corpses"


I decided at this point to restore from a time machine back up. I didn't chose the ones from the morning before because it was after these back ups that my mac wouldn't restart, so opted for the back up the night before because I successfully restarted after this the following morning.


It took 8 and a half hours.


When it had finished, my MAC started just like it had before the problem occurred and everything was back the way it was before anything had happened.


The point is: I am now absolutely terrified to shut my mac down. I did nothing - install any new software, download anything etc - between booting up yesterday morning and yesterday afternoon which would have caused such a critical error, and I just can't believe that I couldn't boot into safe mode, and reinstalling High Sierra didn't fix it (still can't get over this), and am not going to be able to shut down until I know what caused it because I can't wait 8 and a half hours every time I need to use my MAC!!!


I read some articles about kext files, and booted in Verbose mode and saw some error messages about crashes and "too many corpses". I've also in Terminal compared the current system library with the one from the last back up that I successfully booted from and it's only found very few differences - mainly mobile assist fonts, and only 8 cash files - which is really surprising; are the files needed to start up kept somewhere else other than System/Library? I also read that other people managed to log into their macs after restoring from a back up like I have but after the next restart the problem still occured and they couldn't get back in.


Could all this have been caused because I interrupted it when it was being slow to start the first time? But why would it suddenly take so long to start when I haven't installed anything new, and there hasn't been any updates?


Would it be safe to wait for the next update and shut down then?


Is there any danger in leaving your mac mini on for a long time? (fan, heat etc)


Obviously the longer I leave it, the more data I will lose as I will have to restore from the last back up before the problem occurred which is currently the 10th of November, if it won't start again.


Anyone had the same problem and found a fix? Is it now safe to restart? I head something about Kext files in the Extensions folder and moved them but it didn't fix my problem. I can't think of anything I did between 9am and 1pm that would cause such a slow start up followed but such a fatal error; I installed High Sierra over a month ago, and installed the last update over a week ago.


What could High Sierra have done on it's own in the background between 9am and 1pm that now prevents it from starting up?


HELP!

Mac mini, macOS High Sierra (10.13.1)

Posted on Nov 12, 2017 1:12 PM

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Question marked as Top-ranking reply

Posted on Jan 19, 2018 11:37 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.

148 replies

Feb 22, 2018 12:14 PM in response to fpuk69

There is a solution described in the question:

High Sierra: qmasterd/opendirectoryd: Too many corpses being created

See a solution to the issue from frankv or another similar from rew10000, also look at: http://capitoladesign.com/2018/02/10/osx-too-many-corpses-the-30-minute-fix-no-d ata-loss/

Here is probably the quickest solution from frankv:

If you want to remove all users (without removing home folders)

If you suspect that the local database which stores user accounts is damaged, follow the steps for the version of OS X you're using below. These steps remove all user accounts without removing their related Home folders, and make Setup Assistant open again.


Start up in Single-User Mode by holding Command-S when you turn on the computer. Wait until white text appears.

At the prompt, type each of these commands on single line as they appear below, and press Return at the end of each line.


mount -uw /

cd /var/db

mv dslocal dslocal.old

mkdir -p dslocal/nodes

cp -Rp /System/Library/DirectoryServices/DefaultLocalDB/Default dslocal/nodes/

rm .AppleSetupDone

reboot


Once the computer restarts, complete Setup Assistant to create the administrator user account again. When creating the account, the short name entered into the Account Name field should match the name of the user's home folder in /Users, so that the new user will use the existing home folder.

After Setup Assistant, open Terminal and type this command:


sudo chown -R username:staff /Users/username


Note: There is a space before "/Users/". Replace "username" with the user's short name that was entered in Account Name field during the previous step.


If there was more than user on the computer, use the Accounts pane of System Preferences to re-create any remaining users. When creating each account, the short name entered into the Account Name field should match the name of that user's home folder in /Users, so that the new user will use the existing home folder.

Feb 24, 2018 12:40 AM in response to fpuk69

Hello, I have also experienced this very frustrating problem. I have tried all the steps mentioned in this thread multiple times. The only thing that worked was to restore a Time Machine backup to a previous OS version number.


I have a 2011 IMac, if this issue is due to the fact my machine is relatively old then Apple need to be advising users. I’m just happy we had a recent backup to avoid losing the 15k+ photos we have on there.


I hope that you get a satisfactory resolution to your issue.

Feb 28, 2018 9:19 AM in response to hamosity

Thank you for posting this. I did what you suggested and it worked. I was talking to Apple and they were somewhat helpful but I just couldn’t get my machine to restart after the recent High Sierra software update. Thanks to you I didn’t have to go buy a new machine. I erased my hard drive and use Time Machine and now my iMac works perfectly. Thank you thank you thank you!

Mar 7, 2018 8:06 AM in response to fpuk69

Hello All,


I found a solution that worked for me..


Boot into Recovery Mode


Open Terminal


Create a new Directory on your Hard Drive

mkdir /Volumes/"Macintosh HD"/kextbackup


Go to the Folder Extensions
cd /Volumes/"Macintosh HD"/System/Library/Extensions


Move the HuaweiDataCardDriver.kext to you new created directory

mv HuaweiDataCardDriver.kext /Volumes/"Macintosh HD"/kextbackup


Close Terminal and reboot.



This then fixed my issue straight away. You can try moving other kext files, some other ones that are recommended if you have:

Belcarra.USBLAN_netpart.kext
Belcarra.USBLAN_usbpart.kext
HuaweiDataCardDriver.kext
JMicronATA.kext
RemoteControl.USBLAN_usbpart.kext
UsbEthernetGadget.kext
USBExpressCardCantWake_Huawei.kext


Cheers


Chris

Mar 16, 2018 5:21 AM in response to fpuk69

i had the same problem and sometimes a disk read error and other times it's stuck with login user photo, i tried somone's steps here it didn't work so i lost hope, however just after doing this, i inserted a bootable usb flash with sierra install files and it automatically chose to boot from it. i unplugged the usb memory while the progress bar wasn't complete. My mac then restarted and i was surprisingly able to login normally. Hope this help anyone

Mar 16, 2018 10:35 PM in response to M.saeed12

I ran into this problem two days ago. Turned on MacBook Pro mid2012 and wouldn’t boot. Tried most of what was suggested here. What worked for me is the following. Went into recovery mode, command R, attached watermark hard drive I had used to do a backup in sept 2017. I haven’t backup since so I did a disk image of the hard drive and saved it to the external drive. Then did a restore from my sept backup. That restored is version 10.9.5. After restore system booted ups as normal. I opened the image file by double clicking on the .dmg file on my external drive, clicked on skip. I moved all the files since my last backup from the .dmg to the hard drive in their respective folders. Ran time machine backup. Now I’m going to install Sierra not High Sierra and see what happens.

Mar 20, 2018 2:19 PM in response to dfsdfsdfzsdfxdfzsdfzsdfzsd

I'm so glad I found this post because after trying a hundred other fixes this is what worked for me. Took my Mac from home to my work where the crashed iMac was. Got a Thunderbolt cable and my "Stuck" iMac's HD showed up right on the desktop of my other iMac. I had a lot of files backed up but there was quite a bit that was not. I just dragged everything over to an external HD I had plugged in and recovered everything I needed. I then restored the stuck iMac with a Time Machine backup from a year and a half ago, at least I didn't have to reinstall everything.

Mar 23, 2018 1:35 PM in response to fpuk69

Just wondering if anyone has had progress with this issue? I have a new 2017 iMac desktop I got for Christmas from my husband & have been stuck here as well for 3 days now. I spent 45 mins on the phone with tech support & after doing all the things mentioned here he had me load a copy of the HD in the utilities menu. It took over 2.5 hrs. to load & install only to end up in same place. Needless to say I am very upset as this is my only computer, it's brand new & I have taxes to file among other things. I made an appointment to take it in but their first appt. isn't for another week (snowbird season in FL 😭) so I'm stuck using my outdated iPad which isn't fun. 😡 I guess I am spoiled as this was a replacement for a late-2009 iMac that I never had an issue with the HD until last October. My husband replaced it for me so I wouldn't have this exact problem...go figure. 🙄😡😡

Mar 29, 2018 6:25 PM in response to fpuk69

The past week or so there had been days when my iMac (27-inch lated 2013, running High Sierra) got really sluggish. After a reboot and/or just given time, it had seemed to fix itself.


But today my iMac got unusably slow. I reset the SMC and it booted normally. I then reset the PRAM, and I got the progress bar stuck on 100%.


Eventually I was able to fix it (at least it seems fixed for now) by rebooting into recovery mode and using Disk Utility. It took so long booting into recovery mode that I thought it was locked up again. But eventually the screen went black, with a flickering cursor in the upper left. I clicked the mouse and the recovery mode UI was revealed.

Apr 2, 2018 10:06 PM in response to melanniefrom239

I just wanted to update anyone who is still or started having the same issue as I have (stuck progress bar & nothing tech support did helped). I was FINALLY able to get my iMac to the Genius Bar Thursday (over a week from when my problem started). After the tech evaluated my computer's hardware everything was fine (no HD crash as I was fearing). Problem was with High Sierra & in the store he had only seen problems with it a couple of times & they were on older computers, not new like mine. Since I had my external HD with me with a recent save on it he suggested an erase & reinstall of the OS & I agreed since it would only take about 15-20 mins. that way. Everything went smoothly & I was in & out in 37 minutes. I explained my internet can be a bit slow at times & there is nothing I can do about it as far as upgrading. My internet provider (Centurylink) only provides 8 Mbps service in my area & there are no other providers here. He said it's possible the OS was in the process of updating & something happened to interrupt it & it hung up like that. He suggested getting a new modem since mine was over 3 yrs. old (something I've been thinking about myself). So I got a new one from CL on my way home that day & the internet is definitely running smoother & stronger so hopefully no more problems. This was definitely not something I could've done with a tech over the phone & by doing it in the store they used a cable so no WiFi hiccups to interrupt the process. Fingers crossed no more trouble! 🙂

Apr 4, 2018 4:49 PM in response to melanniefrom239

Same issue here. My imac is only six month old and yesterday I was very upset when I turned on my computer and I experienced this problem. I reinstalled MacOS, tried almost everything I read on this forum - reseting NVRam, disk utility and nothing worked. Still stucked. I made an appointment for this Saturday by phone. I hope I can get my imac working again.

Apr 5, 2018 2:58 AM in response to Natpeloggia

Natpeloggia - Did you try my fixed.

Has worked on 2 new computers so far here in my office.

Its a tiny bit technical but actually easy to do:


Boot into Recovery Mode


Open Terminal


Create a new Directory on your Hard Drive by typing the line below into terminal.

mkdir /Volumes/"Macintosh HD"/kextbackup


Go to the Folder Extensions

cd /Volumes/"Macintosh HD"/System/Library/Extensions


Move the HuaweiDataCardDriver.kext to you new created directory by typing the line below into terminal.

mv HuaweiDataCardDriver.kext /Volumes/"Macintosh HD"/kextbackup


Close Terminal and reboot.

Progress Bar Stuck on 100% on boot High Sierra

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