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

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

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  • by RyanManUtd,

    RyanManUtd RyanManUtd Jul 25, 2015 10:01 AM in response to RyanManUtd
    Level 1 (114 points)
    Mac OS X
    Jul 25, 2015 10:01 AM in response to RyanManUtd

    RyanManUtd wrote:

     

    You guys were brilliant !

     

    The SATopwater CMD-R method did not work for me bcos for some reason, the wifi icon did not appear and instead it ask me whether I want to use time machine.

     

    So I shutdown again and use the shift key method, the the progress bar very fast moves to the right and after typing in the password, the screen kept flickering.

     

    Then I do a restart and everything looks fine. So far so good.

     

    Except the Time Machine icon is no longer on the task bar. How do I get that back ?

     

    Thanks

    Thanks, that was on 6-May-2015 when this problem was already solved.

     

    Now on 25-July-2015, suddenly it got stuck at 50% again !

     

    This time I just did the following:

     

    1) press and hold the power button for 10 seconds to OFF the system.

     

    2) press the ON button again to ON the system (this time I did not press any shift ket or and cmd-key, just the ON button and let it go ... )

     

    And the progress bar moved very fast from left to right ... and system back to Normal.

     

    Anyone knows why this is happening/recurring after 3.5 months ?

     

    Is this sign of potential Hard Disk failure ? To be sure, I went to Disk Utility and and do a Verify Disk and the hard disk is OK ...

     

    Anyone knows why this is happening/recurring after 3.5 months ?


    Thank you ..


    Cheers


  • by falcon5819,

    falcon5819 falcon5819 Aug 2, 2015 9:46 AM in response to SATopWater
    Level 1 (0 points)
    Aug 2, 2015 9:46 AM in response to SATopWater

    After 36 hours of awaiting this worked for me.

     

    Stress doesn't help finding things the restart portion meant going to the top main menu click in the Apple then taking restart.

     

    I kept thinking restart the install, off of the menu shown.

     

    Thank you for this great help Apple should have done this.

  • by pamfromlos angeles,

    pamfromlos angeles pamfromlos angeles Aug 5, 2015 10:10 AM in response to SATopWater
    Level 1 (0 points)
    Aug 5, 2015 10:10 AM in response to SATopWater

    Another happy follower! Thank you SATopWater. You are a lifesaver.

  • by Lolathebeagle,

    Lolathebeagle Lolathebeagle Aug 9, 2015 10:38 AM in response to SATopWater
    Level 1 (0 points)
    Aug 9, 2015 10:38 AM in response to SATopWater

    The above happened to me too. My Macpro froze when upgarding to Yosemite.

    Followed the instructions above  and all worked fine .

     

    Was a little worried when after pressing Cmd R it didnt seem to do anything but released after 3 minutes and got the reinstall screen.

    then disabled wi fi and ran the yosemite upgarde again from the startup disc.

    Rebooted in less than 10 minutes.

     

     

    Thank you

     

    Lola

  • by DDNeedsHelp,

    DDNeedsHelp DDNeedsHelp Aug 15, 2015 8:47 AM in response to SATopWater
    Level 1 (4 points)
    Desktops
    Aug 15, 2015 8:47 AM in response to SATopWater

    Thanks for posting this. Mine also stuck and this fixed it.

  • by Regina2828,

    Regina2828 Regina2828 Aug 17, 2015 5:03 PM in response to SATopWater
    Level 1 (0 points)
    Aug 17, 2015 5:03 PM in response to SATopWater

    Thanks so much!  This solved it!

  • by boillum,

    boillum boillum Aug 19, 2015 4:11 AM in response to SATopWater
    Level 1 (0 points)
    Aug 19, 2015 4:11 AM in response to SATopWater

    Great stuff. Great help!

  • by Genie26,

    Genie26 Genie26 Sep 8, 2015 12:17 PM in response to SATopWater
    Level 1 (0 points)
    Sep 8, 2015 12:17 PM in response to SATopWater

    Thanks it work éd allo for IMac 2011.

  • by cpBravo,

    cpBravo cpBravo Sep 18, 2015 3:26 AM in response to SATopWater
    Level 1 (0 points)
    Sep 18, 2015 3:26 AM in response to SATopWater

    OMG...!!! THANKS A LOT ...!!! YOU SAVED MY JOB

    THANKS A MILLION !!!!

  • by JKN000,

    JKN000 JKN000 Sep 26, 2015 8:44 PM in response to SATopWater
    Level 1 (0 points)
    Sep 26, 2015 8:44 PM in response to SATopWater

    This procedure worked for me as well. Apple owes SATopWater some sort of payment in my opinion for helping god knows how many Apple customers out of this fiasco when Apple itself seems clueless.

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