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Question:

Question: Mac stuck on loading bar

Whenever I try to turn on my Mac book Pro, progress bar stops at 100% and never turns on. So kindly provide any solution so that I can access my Mac.

Specs

High Sierra

Mid 2012

4GB ram

Intel I3 processor


P.S. I have tried re-installing high Sierra , SMC reset, disk repair but nothing seems to work.

[Re-Titled by Host]

MacBook Pro with Retina display, macOS Sierra (10.12), null

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Question marked as Helpful

Apr 28, 2018 1:22 PM in response to rahul0907 In response to rahul0907

I'm a very experienced Mac tech support consultant, yet I've been grappling with the "too many corpses" problem since yesterday. I tried a number of approaches, but was confident that a simple solution existed. YOU MAY NOT HAVE TO ERASE YOUR HARD DRIVE, or reinstall Mac OS. I found a couple of postings that explain this surprisingly quick solution. If you're able to get into Recovery Mode utilizing CMD-R, and you're not afraid to work in the Terminal program, THIS WORKS! If you follow these steps EXACTLY, a bad file named "mbr_cache" will be rebuilt and your Mac will reboot successfully (slowly the first time as the rebuild happens, then normal speed after that). This solution worked on my 2011-vintage 21-inch iMac (iMac 12,1) with Mac OS High Sierra. Someone should tell the Apple Geniuses and Tech Support Specialists about this. Or, better yet, they should be able to find these types of solutions themselves. Good luck!

The two articles where I found this solution are:

macos - Opendirectoryd too many corpses being created - Ask Different

https://mrsystems.co.uk/blogs/news/too-many-corpses-being-created


Steps from the articles:

  1. Boot and hold CMD-R to start up from macOS Recovery
  2. If Filevault is on, mount the disk with Disk Utility and enter password
  3. Enter these two commands in Terminal
  4. cd /Volumes/Macintosh\ HD/var/db/caches/opendirectory
  5. mv ./mbr_cache ./mbr_cache-old
  6. Exit from Terminal
  7. Restart the computer

Question marked as Helpful

Feb 24, 2018 12:33 AM in response to rahul0907 In response to rahul0907

I texted a friend of mine that does software development for Apple and he was able to help me get past this problem. I was experiencing the same symptoms: upon starting my iMac, the progress bar would load underneath the Apple logo, and it would just sit there and never progress any further. Here's what helped me solve the issue without having to reformat my drive or reinstall the OS.


With the computer shut down, turn it on and hold down Command + S to launch a command shell. Give it a few minutes until it doesn't load anything else on the screen.


Type the following commands, pressing enter after each command:
mount -uw /

sync

reboot


See if this boots you back into the system. If not, try this order:

mount -uw /

mv /Library/Extensions/*.kext /

mv /Library/LaunchAgents/*.plist /

mv /Library/LaunchDaemons/*.plist /

sync

reboot


I was able to get back into my system, but I noticed if I shut down and tried to turn it back on, the problem still persisted. According to my friend at Apple, he was 99% sure it was third party software. So I uninstalled each new program I had installed recently one by one until I narrowed it down to which one I thought was causing my particular issue. My computer appears stable now, and it may be because a program I was using isn't updated for the latest High Sierra update, and the incompatibility caused something weird to happen on startup. Definitely not 100% sure that's what happened, but between using the commands above to get me back into the computer, and uninstalling things one by one and going through this process over and over until I narrowed it down, it solved it for me. Hope this helps someone else!

Question marked as Helpful

Apr 28, 2018 1:36 PM in response to rahul0907 In response to rahul0907

I'm a very experienced Mac tech support consultant, yet I've been grappling with the "too many corpses" problem since yesterday. I tried a number of approaches, but was confident that a simple solution existed. YOU MAY NOT HAVE TO ERASE YOUR HARD DRIVE, or reinstall Mac OS. I found a couple of postings that explain this surprisingly quick solution. If you're able to get into Recovery Mode utilizing CMD-R, and you're not afraid to work in the Terminal program, THIS WORKS! If you follow these steps EXACTLY, a bad file named "mbr_cache" will be rebuilt and your Mac will reboot successfully (slowly the first time as the rebuild happens, then normal speed after that). This solution worked on my 2011-vintage 21-inch iMac (iMac 12,1) with Mac OS High Sierra. Someone should tell the Apple Geniuses and Tech Support Specialists about this. Or, better yet, they should be able to find these types of solutions themselves. Good luck!

The two articles where I found this solution are:

macos - Opendirectoryd too many corpses being created - Ask Different

https://mrsystems.co.uk/blogs/news/too-many-corpses-being-created


Steps from the articles:

  1. Boot and hold CMD-R to start up from macOS Recovery
  2. If Filevault is on, mount the disk with Disk Utility and enter password
  3. Enter these two commands in Terminal
  4. cd /Volumes/Macintosh\ HD/var/db/caches/opendirectory
  5. mv ./mbr_cache ./mbr_cache-old
  6. Exit from Terminal
  7. Restart the computer

Question marked as Helpful

Dec 20, 2017 1:08 PM in response to rahul0907 In response to rahul0907

Hey rahul0907,

If I understand correctly, the computer will turn on and load the progress bar but not boot to the desktop. This can happen if something like a login item is not loading. One thing you can do is boot into safe mode, which disables login items, and see if the computer loads to the desktop.


Start up in safe mode

To start up in safe mode:

  1. Start or restart your Mac, then immediately press and hold the Shift key. The Apple logo appears on your display. If you don't see the Apple logo, learn what to do.
  2. Release the Shift key when you see the login window. If your startup disk is encrypted with FileVault, you might be asked to log in twice: once to unlock the startup disk, and again to log in to the Finder.

To leave safe mode, restart your Mac without pressing any keys during startup.

User uploaded file

If an issue doesn't happen in safe mode

If an issue doesn't happen when your Mac is started in safe mode, try restarting without pressing any keys.

  • If the issue comes back, you might have incompatible login items.
  • If the issue doesn't come back, it was probably caused by a cache or directory issue with your startup disk, which safe mode fixed.

Use safe mode to isolate issues with your Mac


Thank you for using Apple Support Communities. Have a good one.

Question marked as Helpful

Dec 22, 2017 3:36 AM in response to jameson.h In response to jameson.h

Dear jameson.h


Thanks for understanding problem. Although whenever I try to boot in safe boot, my Mac doesn't boot.


When I tried apple verbose mode I got this message:

Crashed:opendirecotryd:too many corpses are being created


Regards

Rahul

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Question marked as Helpful

Dec 20, 2017 1:08 PM in response to rahul0907 In response to rahul0907

Hey rahul0907,

If I understand correctly, the computer will turn on and load the progress bar but not boot to the desktop. This can happen if something like a login item is not loading. One thing you can do is boot into safe mode, which disables login items, and see if the computer loads to the desktop.


Start up in safe mode

To start up in safe mode:

  1. Start or restart your Mac, then immediately press and hold the Shift key. The Apple logo appears on your display. If you don't see the Apple logo, learn what to do.
  2. Release the Shift key when you see the login window. If your startup disk is encrypted with FileVault, you might be asked to log in twice: once to unlock the startup disk, and again to log in to the Finder.

To leave safe mode, restart your Mac without pressing any keys during startup.

User uploaded file

If an issue doesn't happen in safe mode

If an issue doesn't happen when your Mac is started in safe mode, try restarting without pressing any keys.

  • If the issue comes back, you might have incompatible login items.
  • If the issue doesn't come back, it was probably caused by a cache or directory issue with your startup disk, which safe mode fixed.

Use safe mode to isolate issues with your Mac


Thank you for using Apple Support Communities. Have a good one.

Dec 20, 2017 1:08 PM

Reply Helpful (6)
Question marked as Helpful

Dec 22, 2017 3:36 AM in response to jameson.h In response to jameson.h

Dear jameson.h


Thanks for understanding problem. Although whenever I try to boot in safe boot, my Mac doesn't boot.


When I tried apple verbose mode I got this message:

Crashed:opendirecotryd:too many corpses are being created


Regards

Rahul

Dec 22, 2017 3:36 AM

Reply Helpful (5)

Dec 22, 2017 10:44 PM in response to rahul0907 In response to rahul0907

I'm having the exact same issue... I also reinstalled High Sierra, first aid, etc. Not much of a techy, but unable to find an answer.


Did you end up getting ahold of Apple support? I unfortunately do not have a time machine back up either, so I hope I don't lose everything. Yikes.

Dec 22, 2017 10:44 PM

Reply Helpful

Feb 2, 2018 2:12 PM in response to adityafromfir In response to adityafromfir

Wow! Apple's recent updates really stink. I have been resisting High Sierra because I've heard so many negative things about it, but I decided to install a 10.12.6 security update last night, and my Mac Mini (which is usually fine) hung up "stuck at the full progress bar." I tried every strategy, from safe mode to Disk Utility, but nothing has worked, so now I am backing up from Time Machine. I try to ignore the constant nagging from Apple to upgrade on my desk top and on my iPhone, and from now on I will try harder.

Feb 2, 2018 2:12 PM

Reply Helpful (2)

Feb 3, 2018 9:17 AM in response to adityafromfir In response to adityafromfir

adityafromfir wrote:


Hi PrasadYR,


There is no way other than formatting the internal hard disk and installing the os again.


The issue sounds more like a bad install and/or a corrupted drive. I've had a corrupted drive happen when my machine froze and I forced a power down. Before I do an OS update I make sure to back up. I have a bootable clone (two actually since I'm paranoid), but a lot of people use Time Machine.


A corrupted drive would have to be completely reformatted. I've had one case where High Sierra refused to reformat my drive in HFS+, so I used an older machine running Snow Leopard to reformat.

Feb 3, 2018 9:17 AM

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Feb 4, 2018 3:02 AM in response to rahul0907 In response to rahul0907

Worst update released. Can't even boot up, so I can't finish my university coursework! Thanks Apple for harrassing me to install this terrible update that has caused more than myself the same problem. Pathetic.

Feb 4, 2018 3:02 AM

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Question: Mac stuck on loading bar