SATopWater
Level 1 (5 points)

Q: Yosemite Upgrade - iMac mid-2011 - Stuck on white progress bar screen at about 50%

I have a mid 2011 iMac.  I started the upgrade to Yosemite about 4 hours ago.  For the last 3 and 1/2 hours it's been "stuck" at the white progress bar screen at about 50%.  I hear the harddrive occasionally do reading/writing, but it isn't doing a lot just a tiny bit.  I've seen others post across the net with similar situations, but no solutions.  I'm willing to wait, but would love to know if it's actually proceeding or simply in some infinite loop. 

 

Anyone know how to tell if it's in a loop or proceeding?

 

Anyone have any ideas on things to try?

 

I really don't want to try and interrupt the upgrade, but it doesn't appear it's going to complete. 

 

Ideas?

 

Thanks for any help you all can provide.

 

Perry

iMac, OS X Yosemite (10.10), Upgrade Stuck

Posted on Oct 17, 2014 10:28 AM

by SATopWater,Solvedanswer
SATopWater SATopWater
Level 1 (5 points)
A:

I'm not recommending this to anyone, just thought I'd report on what worked for me:

 

-  Let Yosemite upgrade sit at the white progress bar screen at 50% for 4 hours.

-  Once I was nearly positive it wasn't doing anything like writing to the hard drive...

-  Held power button for 10 seconds to turn computer off

-  Waited about 10 seconds again

-  Turned power on and held Command R  (It took about 3 minutes to boot)

-  Clicked on WI-Fi symbol on upper right and turned off Wi-Fi

-  Selected restart from the System menu option

-  Computer rebooted and finished the upgrade


I have since rebooted (twice to be sure) and run a few things and all seems fine at this point.

Posted on Oct 17, 2014 12:41 PM

Close
SATopWater

Q: Yosemite Upgrade - iMac mid-2011 - Stuck on white progress bar screen at about 50%

  • All replies
  • Helpful answers

Page 1 of 8 last Next

  • by mlb1975,

    mlb1975 mlb1975 Oct 17, 2014 10:48 AM in response to SATopWater
    Level 1 (0 points)
    Oct 17, 2014 10:48 AM in response to SATopWater

    I am having the same issue. I started my update last night and it's been stuck at about halfway for 12 hours.

  • by jpgoldberg,

    jpgoldberg jpgoldberg Oct 17, 2014 11:01 AM in response to mlb1975
    Level 1 (16 points)
    Oct 17, 2014 11:01 AM in response to mlb1975

    I think I've found some explanation in this thread

     

    Upgrade taking excessive time (15 hours and counting)

     

    Do you have something like Homebrew, Macports, or TeXLive installed where you have lots of installed files outside of /Users that weren't installed by an Apple installer?

  • by mlb1975,

    mlb1975 mlb1975 Oct 17, 2014 11:09 AM in response to jpgoldberg
    Level 1 (0 points)
    Oct 17, 2014 11:09 AM in response to jpgoldberg

    No, I do not have any of those apps. It's just been sitting on that half way point forever. I have rebooted and it just goes back to that spot.

  • by jpgoldberg,

    jpgoldberg jpgoldberg Oct 17, 2014 11:19 AM in response to mlb1975
    Level 1 (16 points)
    Oct 17, 2014 11:19 AM in response to mlb1975

    Hmm. If you don't have a lot of stuff outside of /Users and /Applications that have been installed through non-Apple mechanisms then I'm at a lose, but that has been the best guess so far as the cause of the excessive delays.

     

    I should say that after 16 hours the iMac I described in that thread did finish.  So perhaps you should see what happens if you just wait it out.

  • by jtaormina,Helpful

    jtaormina jtaormina Oct 17, 2014 11:24 AM in response to SATopWater
    Level 1 (5 points)
    Oct 17, 2014 11:24 AM in response to SATopWater

    also having this problem on a 2011 era macbook air. left running over night and still at 50%. Multiple reboots still stuck at 50%

  • by mlb1975,

    mlb1975 mlb1975 Oct 17, 2014 11:30 AM in response to jtaormina
    Level 1 (0 points)
    Oct 17, 2014 11:30 AM in response to jtaormina

    I have a MacBook Pro from the same time and same issue. It's been 15 hours now and nothing. I have a call into Apple so hopefully we'll see what's up.

  • by jtaormina,

    jtaormina jtaormina Oct 17, 2014 11:34 AM in response to mlb1975
    Level 1 (5 points)
    Oct 17, 2014 11:34 AM in response to mlb1975

    Let us know what they have to say please.

  • by SATopWater,Solvedanswer

    SATopWater SATopWater Oct 17, 2014 12:41 PM in response to jtaormina
    Level 1 (5 points)
    Oct 17, 2014 12:41 PM in response to jtaormina

    I'm not recommending this to anyone, just thought I'd report on what worked for me:

     

    -  Let Yosemite upgrade sit at the white progress bar screen at 50% for 4 hours.

    -  Once I was nearly positive it wasn't doing anything like writing to the hard drive...

    -  Held power button for 10 seconds to turn computer off

    -  Waited about 10 seconds again

    -  Turned power on and held Command R  (It took about 3 minutes to boot)

    -  Clicked on WI-Fi symbol on upper right and turned off Wi-Fi

    -  Selected restart from the System menu option

    -  Computer rebooted and finished the upgrade


    I have since rebooted (twice to be sure) and run a few things and all seems fine at this point.

  • by kernelNerd,

    kernelNerd kernelNerd Oct 18, 2014 9:53 AM in response to SATopWater
    Level 1 (0 points)
    Oct 18, 2014 9:53 AM in response to SATopWater

    I have the same 2011 Mac Book Pro and the install boot scree hung at exactly at 50%. I performed the same exact procedures and it came up immediately!  Funny thing is, I had already disabled WiFi before the upgrade anyway, however it was enabled after the first boot. Thanks for the tip!

  • by mlb1975,

    mlb1975 mlb1975 Oct 18, 2014 10:05 AM in response to SATopWater
    Level 1 (0 points)
    Oct 18, 2014 10:05 AM in response to SATopWater

    This did the trick! Thank you. The Apple Care guys said my only option was a wipe clean. So glad I had your tip.

  • by Sparkleberry,Helpful

    Sparkleberry Sparkleberry Oct 18, 2014 10:08 AM in response to mlb1975
    Level 4 (3,115 points)
    Notebooks
    Oct 18, 2014 10:08 AM in response to mlb1975

    This worked for my MBP 17" mid-2010 after 10 hours of minor panic watching progress bar stuck at 50%:

     

    Reboot and hold SHIFT key to go into Safe Mode and keep holding that SHIFT key.

    *Patience is the key to the Shift key*

    Keep the Shift key down.

    Do not let go of Shift key until you go to Italy when the computer does its Venetian blinds thing and goes into Safe Mode.

    Check whether you have any login items. Do this via via Sys Preferences > Users & Groups

    It is going to be slow. You are in SafeMode.

    Remove any login apps.

    Run any updates for Yosemite (e.g. Pages, Numbers, Keynote) within Safe Mode.

    Reboot. 


    Remember, YMMV

  • by xtylo,

    xtylo xtylo Oct 18, 2014 2:11 PM in response to SATopWater
    Level 1 (0 points)
    Oct 18, 2014 2:11 PM in response to SATopWater

    Tried on mbp mid 2009 and fixed the problem

  • by Gapinwales,

    Gapinwales Gapinwales Oct 18, 2014 2:30 PM in response to mlb1975
    Level 1 (0 points)
    Oct 18, 2014 2:30 PM in response to mlb1975

    I do the following

    - Switch iMac on as usual and allow 5-10 mins for something to work.

    - Press and hold the power on/off button at rear for 10 seconds and then power back on.

    - You should now be up and running.

     

    I am not sure what else to suggest or whether this is a good idea. It works for me, despite having to effectively switch it on twice its working.

     

    Hoping some kind of update will be offered in the very near future, appears to be a great deal of these shenanigans.

  • by bazapple,

    bazapple bazapple Oct 18, 2014 3:10 PM in response to SATopWater
    Level 1 (4 points)
    Wireless
    Oct 18, 2014 3:10 PM in response to SATopWater

    We are talking about the rebooted progress bar...the gray screen with the apple and bar underneath, correct?   Mine has been stuck at 50% for 3 hours and I'm trying to figure out my next step...

Page 1 of 8 last Next