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 John Galt,Helpful

    John Galt John Galt Oct 2, 2015 4:32 AM in response to Deoxyribonucleic
    Level 8 (49,039 points)
    Mac OS X
    Oct 2, 2015 4:32 AM in response to Deoxyribonucleic

    Boot OS X Recovery by holding and r (two fingers) while you start your Mac. Choose "Reinstall Mac OS X". That ought to reinstall El Cap and not your previously installed OS. See how far you get.

  • by Peter Moyer,Solvedanswer

    Peter Moyer Peter Moyer Oct 1, 2015 4:40 PM in response to Deoxyribonucleic
    Level 4 (1,350 points)
    Oct 1, 2015 4:40 PM in response to Deoxyribonucleic

    I Was stuck at that point as well. I performed a shutdown and restart and it booted up fine. Might be worth a try.

  • by Deoxyribonucleic,

    Deoxyribonucleic Deoxyribonucleic Oct 2, 2015 4:36 AM in response to John Galt
    Level 1 (0 points)
    Oct 2, 2015 4:36 AM in response to John Galt

    Hi,

    Thank you for help.

    I have tried to reinstall El Capitan  about four times (rebooting in OS recovery CMD+R) but it had stopped every each time just before end of downloading with no progress or response . Although I gave it a final try last night and surprisingly it did work straight away! Whats more it kept all my files, apps, desktop and everything else untouched.  Very happy I got my Mac working again.

    (now I am experiencing strange Mail behaviour - it keeps synchronising all messages over and over again showing new messages all the time, also three finger touch to highlight and Look Up in dictionary etc. stopped working but that is a detail in comparison to previous issues . ). Thank you.

  • by elroachio,

    elroachio elroachio Oct 2, 2015 11:09 AM in response to Deoxyribonucleic
    Level 1 (45 points)
    Oct 2, 2015 11:09 AM in response to Deoxyribonucleic

    I solved it once by going into Recovery Mode and disabling 3rd party Kexts using terminal. Couple of reboots later and the empty load bar has returned. I've tried several reboots and repaired the partition in Disk Utility. Still won't boot.

     

    I don't recall reinstalling any new Kexts in the last 24 hours, but I'll repeat the process and hopefully it'll work again.

     

    Full details here:

    https://forums.developer.apple.com/message/67556#67556

     

    see answer by Max108

  • by Ekaradimos,

    Ekaradimos Ekaradimos Oct 3, 2015 12:40 AM in response to Deoxyribonucleic
    Level 1 (4 points)
    Oct 3, 2015 12:40 AM in response to Deoxyribonucleic

    I Really cannot solve this issue. I used recovery 3 times, re-install El Capitan, but when I reboot I get stucked on the grey screen with Apple logo and empty progress bar

  • by getsirish,Helpful

    getsirish getsirish Oct 4, 2015 1:44 AM in response to Deoxyribonucleic
    Level 1 (5 points)
    Oct 4, 2015 1:44 AM in response to Deoxyribonucleic

    I am having the same issue, after installing el capitan everything works fine till i reboot the system, then it gets stuck at Apple logo! :-(

    i have reinstalled El captain 3 times already. installation works fine but again on rebooting its the same story. Really ****** off. planning to downgrade to yosemite.

    MacBook Mid 2009

  • by 12David,Helpful

    12David 12David Oct 4, 2015 1:58 AM in response to Deoxyribonucleic
    Level 1 (5 points)
    Oct 4, 2015 1:58 AM in response to Deoxyribonucleic

    There is truly something wrong with this upgrade.  Too many people (to include myself) continue to have this problem.  I spent a couple of hours with Apple Support yesterday, and ended up with the same problem.  The support person was very nice, but he can't compensate for a lousy operating system.  Come on Apple, please try to get it together this time.  Don't tell us that "we are holding it wrong", or some other crap.  Just fix your software.  Our checks and credit cards working, may be your products should also.  I have downgraded back to Yosemite and will continue to use it until Apple gets it act together.  Dell, Lenovo, Microsoft Surface?

     

    Just a thought.

  • by AlainBiz,

    AlainBiz AlainBiz Oct 4, 2015 3:14 AM in response to 12David
    Level 1 (0 points)
    Oct 4, 2015 3:14 AM in response to 12David

    Unfortunately, I have to agree with 12David.

    Mac Book Air of 2011.

    Filevault active

    Login freeze on 0% of progress bar after upgrade to El Capitan.

  • by hadamard,

    hadamard hadamard Oct 4, 2015 3:55 AM in response to Deoxyribonucleic
    Level 1 (5 points)
    Oct 4, 2015 3:55 AM in response to Deoxyribonucleic

    I am having the same issue! I have reinstalled El captain on my MacBook Pro (late 2008) 3 times.

    The installation works fine but again on rebooting its the same story: login freeze on 0% of progress bar and Apple logo displayed. :-/

     

    I will downgrade to Yosemite.

    IMG_1096.JPG

  • by hadamard,Helpful

    hadamard hadamard Oct 4, 2015 7:01 AM in response to hadamard
    Level 1 (5 points)
    Oct 4, 2015 7:01 AM in response to hadamard

    I have removed old kexts file left over from old installs of Eltima SyncMate and VirtualBox.

    1. Booting up in recovery mode;
    2. Open the terminal window and copy-paste the following commands into it (original post https://forums.developer.apple.com/message/39138#39138):

     

    • rm -Rf /Library/Extensions/VBox*
    • rm -Rf /Library/Application\ Support/VirtualBox/VBox*
    • rm -Rf /System/Library/Extensions/Eltima*

     

    After running these commands, my MacBook has booted up normally with no further issues.

  • by Thomas Russo,

    Thomas Russo Thomas Russo Oct 4, 2015 4:08 PM in response to Peter Moyer
    Level 1 (85 points)
    Notebooks
    Oct 4, 2015 4:08 PM in response to Peter Moyer

    Unfortunately, a simple shutdown and reboot did not solve my problem. For those still having this issue (Apple logo appears, progress bar at 0%), the following appears to have fixed the issue for me (for now):

     

    Taking a cue from member hadamard, I removed any extraneous .kext files from the /Library/Extensions and /System/Library/Extensions directories, as well as the /Library/StartupItems folder.

     

    I had upgraded El Capitan over Yosemite, whereafter I could not boot up normally. I booted into the Recovery Disk, made an emergency partition of my 1 TB hard drive (ensuring that it did not erase my other partitions), and did an emergency El Capitan install on that. From there I was able to make a Time Machine backup of my original boot drive (I ought to start backing up more!) before wiping my original boot drive, installing El Capitan again, and then migrating my settings, users, documents, etc. back after install. Unfortunately, when I rebooted after all this, I had the same problem– as it turns out, Apple migrates almost everything in the Migration Assistant. Comparing the .kext files from the aforementioned directories (between the emergency install and the migrated/upgraded install), I was able to determine which ones to remove (HINT: sort list by date, the oldest files are generally non-Apple and likely your problem).

     

    My fresh install of El Capitan contained 266 kext files in the System Extensions folder, and 10 in the Library Extensions folder. Any more than that are probably third-party files. I had over 300 kext files, and though I am sure only 1 or 2 of them are the root cause, I removed them all to be safe (copied to a non-system folder in case I need to put them back later).

     

    Hope this helps some people!

  • by r_scheid,

    r_scheid r_scheid Oct 4, 2015 6:36 PM in response to Ekaradimos
    Level 1 (23 points)
    Mac OS X
    Oct 4, 2015 6:36 PM in response to Ekaradimos

    **** EDIT **** Double post. Read below. Sorry.

  • by r_scheid,

    r_scheid r_scheid Oct 4, 2015 6:35 PM in response to Ekaradimos
    Level 1 (23 points)
    Mac OS X
    Oct 4, 2015 6:35 PM in response to Ekaradimos

    I didn't do the KEXT management and I was able to fix it a different way.

     

    I solved mine by Flashing the PRAM (Command Option P R held during boot until it reboots.) Then I let it boot and it made it past the apple logo (it too a loooong time) and then I was able to log in (which also took a looooooooog time.)

     

    Give that a try.

  • by Thomas Russo,

    Thomas Russo Thomas Russo Oct 4, 2015 6:49 PM in response to r_scheid
    Level 1 (85 points)
    Notebooks
    Oct 4, 2015 6:49 PM in response to r_scheid

    I forgot to add that I tried zapping the PRAM / NVRAM myself (I have a 2010 MacBook Pro). Didn't work, so I performed the steps outlined above. If some of you are able to fix the issue without removing the third-party .kext files, more power to you. Different fixes may imply different causes; hopefully one of the solutions here works for those who are still encountering this problem.

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