Deoxyribonucleic

Q: Boot up after installing El Capitan

HI,

I've got stuck with white screen with Apple logo and empty progress bar underneath after installation of El Capitan. Booting up in safe mode gives the same result. I've made schoolboy error- trusted and did not back up system with time machine. Any help highly appreciated. Thank you.

MacBook Pro, OS X El Capitan (10.11)

Posted on Oct 1, 2015 4:10 PM

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Q: Boot up after installing El Capitan

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  • by NickTsiotinos,

    NickTsiotinos NickTsiotinos Oct 29, 2015 5:52 AM in response to franciscofrombaltimore
    Level 1 (0 points)
    Oct 29, 2015 5:52 AM in response to franciscofrombaltimore

    Yes indeed this should not happen. What a total disaster of an update.

    Finally the getting rid of the KTEXT unsigned files got me going as well.

     

    My tale of woe:

    - tried a direct update - no reboot.

    - reinstalled the OS - no reboot.

    - reverted to Yosemite time machine backup.

    - Tried totally clean install and migrate all data and apps - no reboot.

    - reverted to Yosemite time machine backup.

    - tried clean install only data and account settings migrated - no apps - no reboot.

    - tried clean install of original OS (Lion) - update El Capitan - migrated everything - no reboot.

    - tried to revert to Yosemite time machine backup (twice) - no reboot (twice).

    - reinstalled OS from recovery - El Capitan - followed the link showing how to find unsigned ktexts and delete.

    FINALLY REBOOT IN EL CAPITAN. ALL DATA AND APPS INTACT.

     

    I agree that this should not happen - with the enormous resources available to Apple - they surely should be able to get this right.

     

    Thanks everyone that takes part in these forums - good outcome.

  • by Mlnoles,

    Mlnoles Mlnoles Oct 29, 2015 6:01 AM in response to NickTsiotinos
    Level 1 (0 points)
    Oct 29, 2015 6:01 AM in response to NickTsiotinos

    II updated my macbook Pro last night and left it plugged in to finish. I closed it this morning to take the class and I am stuck on an almost finished progress bar. No matter how many times I press he power button to restart, it restarts to the same page. Help?

  • by davidspirovalentine,

    davidspirovalentine davidspirovalentine Nov 2, 2015 2:13 PM in response to Seth Willits
    Level 1 (4 points)
    Nov 2, 2015 2:13 PM in response to Seth Willits

    This worked perfectly for me, thanks!

     

    I created a backup of the whole extensions directory and then started deleting the 3rd party kexts.

     

    Now to find exactly which kext was causing the issue...

  • by Teamhrach,

    Teamhrach Teamhrach Nov 11, 2015 10:01 AM in response to Deoxyribonucleic
    Level 1 (0 points)
    Nov 11, 2015 10:01 AM in response to Deoxyribonucleic

    I had this same issue after installing El Capitan. Everything seemed fine until I tried to restart. I finally got it shut down and when I tried to start again it wouldn't boot.

     

    Max108 over on the Developer Forums fixed the problem for me and my MacBook Pro is starting up just fine now.  I found him here: https://forums.developer.apple.com/message/68726 

     

    Turns out, AVG free anti virus was the culprit in my case....

  • by jknesl,

    jknesl jknesl Nov 25, 2015 5:57 PM in response to Carlos Soto
    Level 1 (0 points)
    Nov 25, 2015 5:57 PM in response to Carlos Soto

    Hi,

    thanks for posting a remedy.

    Have same problem with empty progress bar on boot.

    Could you please explain what you mean by what you put in parentheses: ls /Volumes    (-l from line, large, long-) ?.

    Do i have to enter the words in the command line in italics, bold?

    Where you show a space in the command line, do I put a space?

    Thanks for helping me out,

    Johannes

  • by Nautical Eyes,

    Nautical Eyes Nautical Eyes Jan 10, 2016 2:47 AM in response to Deoxyribonucleic
    Level 1 (0 points)
    Jan 10, 2016 2:47 AM in response to Deoxyribonucleic

    2016-01-10 15.44.45.jpgAftter installing  an update for el capitan, progress bar stuck up at completion while restarting. Cant go further. Reinstalled OSX el capitan again . But no sucess. Always after sucessful installation. While restaring progress bar stuck at completion. Please if somebody or Apple can guide.

  • by Nautical Eyes,

    Nautical Eyes Nautical Eyes Jan 10, 2016 2:51 AM in response to Cerebro
    Level 1 (0 points)
    Jan 10, 2016 2:51 AM in response to Cerebro

    2016-01-10 15.44.45.jpg

    Same happened with me. But still no solution found.

  • by JPJacobsen,

    JPJacobsen JPJacobsen Jan 19, 2016 3:13 AM in response to franciscofrombaltimore
    Level 1 (0 points)
    Jan 19, 2016 3:13 AM in response to franciscofrombaltimore

    I was having the same problem when trying to migrate. The only thing that solved was this solution you mentioned:

    1) Erase hard drive

    2) Re-install mountain lion

    3) Upgrade to El Capitan

    4) Migrate from a time machine backup trough migration assistant

     

    Thanks for sharing your solution. It really helped me.

     

    Cheers from Brazil,

    JP Jacobsen

  • by plaidflannel,

    plaidflannel plaidflannel Feb 13, 2016 9:14 AM in response to Deoxyribonucleic
    Level 1 (0 points)
    Feb 13, 2016 9:14 AM in response to Deoxyribonucleic

    Although I have not yet found the reasons for the poor performance of El Capitan on my Mac Mini, I have found a workaround that is almost 100% effective.

     

    Early in the boot-up process, the screen displays a gray Apple logo with a narrow gray progress bar below. The progress bar increases in length noticeably for about a minute, but then slows significantly at about the 60%-70% mark. At this point, I press and hold the power button on the back of the computer for five seconds, which causes the computer to shut down. Then I immediately press the power button again to initiate another start-up. I find that it proceeds normally and quickly, and that I no longer get the spinning beachball every few seconds all day long.

     

    I don’t know if it is relevant, by my machine is configured NOT to display a login dialog on start-up.

     

    If you find this workaround to be successful for you, please add a posting here. It may eventually help us diagnose this problem better.

     

    If you have skill in interpreting console messages, I could post messages before and after the forced shutdown. That might also help us diagnose this problem better.

     

    My configuration: Mac Mini, late 2009, 2.6 GHz Core 2 Duo, 4 GB RAM, 500 GB internal disk with 130 GB partition for El Capitan 10.11.3, 1 TB Western Digital FireWire 800 external disk for Time Machine

  • by gypsysoul3,

    gypsysoul3 gypsysoul3 Sep 12, 2016 12:54 PM in response to Deoxyribonucleic
    Level 1 (8 points)
    Sep 12, 2016 12:54 PM in response to Deoxyribonucleic

    In doing the upgrade I was unable to get my Macbook Pro operating again. I found a posting by Max108 in the Developer Forum; and he is super helpful, quite personable and very reasonably priced. I highly recommend him. https://forums.developer.apple.com/message/69220

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