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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

Posted on Dec 19, 2017 8:58 AM

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Question marked as Top-ranking reply

Posted on Feb 24, 2018 12:33 AM

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!

124 replies

Jun 14, 2018 11:08 AM in response to lissalei

I’m so glad you were finally able to succeed. One thing you learn when you do a lot of troubleshooting is the importance of patience. The other is the importance of following directions exactly. Many questions can be answered with simple Google queries, such as “Mac recovery where is terminal.” I wasn’t able to respond to all of your questions, but I’m very pleased that you were able to figure things out. Way to go! Patrick

Jun 20, 2018 9:54 AM in response to sibajisanyal

Hey, you know, stuff happens. Computers and software are insanely complex systems, made by human beings. No matter how carefully they’re crafted, or how thoroughly they’re tested, sometimes things go sideways. The tiniest software mistake can cause this kind of problem. So, don’t be bent out of shape when something goes wrong. Be amazed and thankful that our technology works (quite miraculously) most of the time. Good job fixing your problem. Patrick

Aug 17, 2018 7:59 PM in response to ThiloJD

ThiloJD,


You just saved my life. A good 10 hrs. finding and implementing "solutions", none of which worked. Just about to search for the nuclear option, reformatting, when I found your absurdly simple solution. Boom! I'm booted up. I've no idea why that key combination works, but it worked perfectly.


Big thanks to you for posting that.

Mac stuck on loading bar

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