kfchan88
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Q: Unable to boot after 10.10.1 update

I just updated my 2009 iMac from 10.10 to 10.10.1 and it wouldn't boot properly now.

 

I get the Apple logo and a progress bar but the boot process stopped afterwards leaving me with a white screen and my cursor.

 

The same update on on a newer iMac went without problems.

 

Have anyone out there experienced the same problem?

iMac (27-inch Mid 2010), OS X Yosemite (10.10), 10.10.1

Posted on Nov 18, 2014 3:45 AM

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kfchan88

Q: Unable to boot after 10.10.1 update

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  • by Roman B,

    Roman B Roman B Nov 18, 2014 6:51 AM in response to kfchan88
    Level 1 (10 points)
    Nov 18, 2014 6:51 AM in response to kfchan88

    I have the same exact problem. Also 2010 iMac. Have you found any solution?

  • by kfchan88,

    kfchan88 kfchan88 Nov 18, 2014 7:17 AM in response to Roman B
    Level 1 (0 points)
    Nov 18, 2014 7:17 AM in response to Roman B

    Unfortunately not.

     

    I tried to recover from my OSX Maverick partition and that failed with some strange error.

     

    I then tried to reinstall with my original Mac OSX disc and that failed too.

     

    Since I don't have any important data on my iMac, I used Disk Utility to erase the Macintosh HD default partition and reinstalled successfully using my original disc on the 2nd try.

     

    Its appalling how poor Apple's software QC is these days !

  • by R.Simon,

    R.Simon R.Simon Nov 18, 2014 7:20 AM in response to kfchan88
    Level 1 (15 points)
    Nov 18, 2014 7:20 AM in response to kfchan88

    not having the exact same issue, but I'm too encountering issues on System Boot (different machine though):

     

    This is something you might try:

    - delete PRAM (cmd-alt-p-r)

    - rebooting from the Recovery Partition (cmd-r while booting) and use DiskUtil to check the HD

    - rebooting into Safe Mode and check HD, Permissions, Startup Volume

     

    (if you're uncertain about these suggestions, please do a research on Apple Support Pages first)

  • by Roman B,

    Roman B Roman B Nov 18, 2014 7:35 AM in response to kfchan88
    Level 1 (10 points)
    Nov 18, 2014 7:35 AM in response to kfchan88

    I was able to boot the system in safe mode. Then the system somehow resumed the installation of 10.10.1 update. It finished and I restarted the iMac successfully. Now everything is back to normal.

     

    Anyways, guys, thanks for the reply.

  • by Payam Minoofar,

    Payam Minoofar Payam Minoofar Nov 18, 2014 7:38 AM in response to kfchan88
    Level 1 (83 points)
    Mac OS X
    Nov 18, 2014 7:38 AM in response to kfchan88

    I'm having this problem with my 2010 MBP. I keep getting the prohibitory sign (do not enter sign) at boot.

     

    The only thing I can think of is that I can think of is that I upgraded my hard drive to a Samsung SSD earlier in the year, and I sed Chameleon SSD to activate TRIM on the hard drive.

     

    But, this was not a problem when I upgraded from Mavericks to three version of Yosemite Beta, to Yosemite final. So, I don't know why it would matter now.

     

    My computer was essentially bricked by 10.10.1 update.

  • by R.Simon,

    R.Simon R.Simon Nov 18, 2014 9:16 AM in response to Payam Minoofar
    Level 1 (15 points)
    Nov 18, 2014 9:16 AM in response to Payam Minoofar

    afaik, Yosemite introduces changes on the file system and also introduces a new security feature for .kext signing, which obviously makes it even harder to enable Trim on 3rd-party SSD.

     

    Booting from Recovery Partition (cmd-r) might give you access to the computer and the ability to at least use diskutil.

    A Safe Boot might get you into the System to deactivate your Trim Enabler (until you find a solution).

     

    It seems that there are ways to deactivate Yosemite's Kext Control mechanism to enable TRIM for 3rd party SSD with newer tools.

     

    This might be interesting to read:

    http://arstechnica.com/apple/2014/10/os-x-10-10/2/

    and there are threads about this issue at MacRumors Forum.

  • by robb1111,

    robb1111 robb1111 Nov 18, 2014 12:30 PM in response to kfchan88
    Level 1 (0 points)
    Nov 18, 2014 12:30 PM in response to kfchan88

    very much the same and when it reboots can take up to 20 mins

  • by djaigs,

    djaigs djaigs Nov 18, 2014 2:39 PM in response to Eric Root
    Level 1 (0 points)
    Nov 18, 2014 2:39 PM in response to Eric Root

    For anybody having startup issues in connection with the OS X 10.10.1 update.

     

    After i installed the 10.10.1 update and rebooted my macbook, it got stuck on the Apple logo with the progress bar at around 50%.

     

    i had to remove the file /var/db/.launchd_rebuild_caches in Single-User-Mode(booted up with Command-S).

    After that the macbook booted up fine and finished the update.

     

    Hope this helps!

  • by swsties,

    swsties swsties Nov 19, 2014 11:47 AM in response to kfchan88
    Level 1 (0 points)
    Nov 19, 2014 11:47 AM in response to kfchan88

    I am having similar issues but so far nothing has worked.  I can not get into safe mode for recovery mode.  I tried target disk mode and did a disk repair, it fine.  I tired single user mode and everything is fine, I even tried removing the file listed above but it could not be found.  I would appreciate any suggestions. I have a TM back up but if I can't get into recovery mode it does not do me much good.  This is a 2011 MBP with a apple HD.

  • by ErikTheCyclist,

    ErikTheCyclist ErikTheCyclist Dec 19, 2014 3:30 AM in response to kfchan88
    Level 1 (0 points)
    Dec 19, 2014 3:30 AM in response to kfchan88

    I just time machined back to the last build that worked on my iMac 27 2011. 

     

    I still have my computer and it works fine, even though HAL says the hard drive is failing.  I don't have an Apple store within 100 miles.

     

    I can't believe Apple has not addressed this problem. 

  • by Payam Minoofar,

    Payam Minoofar Payam Minoofar Dec 19, 2014 8:19 AM in response to ErikTheCyclist
    Level 1 (83 points)
    Mac OS X
    Dec 19, 2014 8:19 AM in response to ErikTheCyclist

    I use Chameleon SSD Optimizer (http://chameleon.alessandroboschini.com). The developer has excellent instructions on how Apple's original drivers can be restored via command line in recovery mode. I used his instructions to boot, then to disable kext signing and to enable TRIM again.

     

    Plan on restoring Apple's drivers (extensions) before doing future updates. That's going to by our MO going forward.

  • by shuistorm9,

    shuistorm9 shuistorm9 Jan 17, 2015 9:09 AM in response to kfchan88
    Level 1 (0 points)
    Jan 17, 2015 9:09 AM in response to kfchan88

    I have the same problem. I managed to read from other forums which i think is a temporary solution.

     

    Once it loads and then turn white screen and only your cursor appears.....

     

    CMD + Alt + Shift + ESC button.

     

    Then it brings me to Login account.... and sign in and all is normal....

     

    But i did try to restart again...and it goes back to white it stops....WHITE screen.....

     

    I hope APPLE fix this pls.....or pls tell me the right way to fix this....

  • by Eric Root,

    Eric Root Eric Root Jan 17, 2015 10:10 AM in response to shuistorm9
    Level 9 (74,005 points)
    iTunes
    Jan 17, 2015 10:10 AM in response to shuistorm9

    Did you try the troubleshooting links I posted earlier?

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