Hello, I have a problem with my MacBook Pro (15" - Mid 2015): on startup, after the login window, the progress bar is very slow and when it is at 100% macOS Sierra does not start. This happens with all the users. I've tried with boot in safe mode but it doesn't work. On the last shutdown I have no problem. How can I resolve?
Thank you.
MacBook Pro with Retina display, macOS Sierra (10.12.2)
Please try this, if you have not already.
Go step by step and test.
1. Repair Disk. https://support.apple.com/kb/PH22243?locale=en_US
2. Reset NVRAM/PRAM. http://support.apple.com/kb/PH18761
3. Reset SMC. Choose the method for “On Mac notebooks with non-removable battery”.
https://support.apple.com/en-us/HT201295
If this doesn’t help, please run EtreCheck and post the report here.
Download it, open Downloads folder, click on it to open, select”Open” in the dialog to run it.
Click “Share Report” button in the toolbar, select “Copy to Clipboard” and then paste it when you reply.
If you have access to another Mac, sign into the App Store using your Apple ID, and download a copy of Sierra. Quit the installer. You can make a bootable USB stick to install using this free program which will do all the work for you.
Bootable USB Flash Drive – Diskmaker X oruse Apple’s method Create a bootable installer for OS
Booting in verbose mode the system stop after:
'busy timeout [x] (60s) kextd wait(1):' some strange characters.
Reading on the internet I found that the problem may be a non-compatible driver installed in the system. Before the last shutdown I have installed a driver for a FTDI usb-serial adaptor. But from the terminal (recovery mode) I can't see this driver (.kext folder) in /System/Library/Extension. So how can I remove it? Is there a way to boot from USB drive and save all my files (I have the filesystem crypted with FileVault)?
Thank you.
I had exactly the same problem, After doing some research i think it's pretty clear this causes because of newly installed kernel extension(.kext file).
My solution was just renaming the Extensions folder in the "/Volumes/Macintosh HD/Library/" to something else(i renamed it into "ExtensionsDisabled"). Inside this folder i noticed there are few kext files and all are not essential to run the main system. So i safely renamed it. And Voila!!! it worked!!!
Although i won't bother about the disabled extensions for the moment.
Just after updating to 10.12.6 progress bar stucks just at the end. Problem was with the extention "HuaweiDataCardDriver.kext". As soon I removed it all was ok. Start in Recovery mode and use the Terminal to move away from the directory /Volumes/"Yourdiskmane"/System/Extentions files "non Apple" .kext that you think can cause the problem. Consider that I found several other user having the same problem with other <..>Huawei<..> .kext .
Follow these steps, worked for me:
1. Shutdown your mac
2. Hold down the Command and R keys, and power the Mac back up again. Keep pressing Command+R while your Mac is booting up.
3. Open the terminal and type the following command :
mv /Volumes/Macintosh\ HD/Library/Extensions
/Volumes/Macintosh\ HD/Library/ExtensionsDisabled
Then after restarting it should be working fine.
This happened to me right after I updated to High Sierra on my MacbookPro and I did everything recommended and nothing seems to work. The progress bar was first stuck at 100% then 50% and everytime it was less and less. The way I was able to solve my problem was by completely resetting my computer as if it was new. If you have your things backed up you should be fine. This was the only thing that worked for me.
This worked for me! Thank you!
MacOS Sierra startup progress bar stucks
