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My iMac is stuck on Grey Screen

745 Views 13 Replies Latest reply: Jan 23, 2013 3:29 PM by BGreg RSS
atkinson569 Calculating status...
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Jan 23, 2013 10:30 AM

Hi there I have a fairly new iMac running on Mountain Lion and it is stuck on the grey screen with the apple symbol and a spinning disk.

Several times it has restarted with a bar at the bottom that gradually turns dark grey but then switches off again on completion.

Can anybody offer any advice.

Thanks

Neil

iMac, OS X Mountain Lion (10.8.1)
  • BGreg Level 6 Level 6 (17,500 points)
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    Jan 23, 2013 11:02 AM (in response to atkinson569)

    Boot into the recovery partition by holding the command and r keys down during the boot. Use Disk Utility to repair the hard drive. Assuming no unfixed errors, boot normally and hopefully all goes well!

  • Baby Boomer (USofA) Level 9 Level 9 (55,540 points)
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    Jan 23, 2013 11:06 AM (in response to atkinson569)

    Mac OS X: Gray screen appears during startup

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    2ue5vgy.gif

  • BGreg Level 6 Level 6 (17,500 points)
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    Jan 23, 2013 12:55 PM (in response to atkinson569)

    When Disk Utility can't repair a disk, as long as there isn't a hardware failure, programs like Disk Warrior and TechTool Pro can usually fix them. Disk Warrior is the preferred product. Did you get a tree error or something indicating a data issue?

     

    Another test would be to run the Apple hardware test to see if there are any hardware issues associated with the disk.

     

    If you don't want to use Disk Warrior to repair the drive, you could erase it by writing zero's to it with Disk Utility, then restore your data from your backup. But do the hardware test first. If the drive has issues, then this may only be a temporary solution.

  • BGreg Level 6 Level 6 (17,500 points)
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    Jan 23, 2013 1:11 PM (in response to atkinson569)

    Was there any sort of informational message in front of that? Usually, but not always, it gives you a one liner on what the issue is.

  • Baby Boomer (USofA) Level 9 Level 9 (55,540 points)
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    Jan 23, 2013 1:48 PM (in response to atkinson569)

    You have directory damage.  You should not use your computer until the damage has been repaired to avoid further damaging your directory.

     

    The following software will repair your directory:

    You must use the versions that are compatible w/your OS system & keep the utilities updated to avoid damaging/harming/trashing your system.

     

    DiskWarrior   Highly recommended for *directory damage* repairs.

     

    TechTool Pro   Multi-functional utility.

     

    Drive Genius Multi-functional utility.

     

    You will need to make your own decision on which to purchase.  Read up on them on their websites because each does something a little different.

     

     

     

     

     

     

     

     

     

     

     

     

     

     

    2ue5vgy.gif

    MacBook Pro, Mac OS X (10.6.8), Original MBP (2/2008)
  • BGreg Level 6 Level 6 (17,500 points)
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    Jan 23, 2013 2:04 PM (in response to atkinson569)

    These are 'soft' errors that can be fixed by Disk Warrior. You can buy it by following the link above. You shouldn't have to erase your hard drive or restore from your backup. In most cases, Disk Warrior will be all you need.

  • BGreg Level 6 Level 6 (17,500 points)
    Currently Being Moderated
    Jan 23, 2013 3:29 PM (in response to atkinson569)

    While you should confirm with Disk Warrior, I think you'll need the DVD version so you can boot to it.  If your iMac could boot on it's own, then you could either download it or access the hard drive through a wired connection to another mac system, however, that's not the case here.

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