iMac won't boot

Discussion in 'Mac Basics and Help' started by Tim in Scottsdale, Sep 3, 2016.

  1. Tim in Scottsdale macrumors member

    Joined:
    Mar 13, 2016
    Location:
    Scottsdale Arizona
    #1
    Guys

    I get a gray screen with a spinning gear, and it just stalls on that. Is my hard drive toast?
     
  2. Fishrrman macrumors G4

    Fishrrman

    Joined:
    Feb 20, 2009
    #2
    First, tell us more about your iMac.

    What year was it made?
    Which one is it?
    Which version of the OS were you running?
    Can you boot while holding down the shift key?

    I know I sound like a broken record, but problems like this illustrate why one should ALWAYS keep an external fully-bootable cloned copy of the internal drive nearby.

    You want to have "a second boot source" close-at-hand if you get into an "I can't boot!" moment, just as you're having now...
     
  3. Tim in Scottsdale thread starter macrumors member

    Joined:
    Mar 13, 2016
    Location:
    Scottsdale Arizona
    #3
    Hello

    iMac i3, 2011 or so, with OSX 10.6.8. A spare machine so no data to lose. I want to clone my other iMac into this one as my spare.

    As to power-up while holding down the Shift key, I did see the progress bar for a short time, and that's as far as it gets.
     
  4. satcomer macrumors 603

    satcomer

    Joined:
    Feb 19, 2008
    Location:
    The Finger Lakes Region
    #4
    Sounds as if the hard drive went south without you!
     
  5. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #5
    Do you still have the original OS X recovery DVDs that came with your iMac?
    If not, you might try booting to the hardware test (restart, holding the D on your keyboard)

    With Snow Leopard, you won't have a recovery partition on the hard drive.
    But, you could try booting to Internet Recovery (Restart, holding Option-Command-R)
    You can run Disk Utility from there, to test your hard drive - if it even shows up in Disk Utility.
    And, Internet recovery will also offer Lion to reinstall, if your hard drive is working.
     
  6. Tim in Scottsdale thread starter macrumors member

    Joined:
    Mar 13, 2016
    Location:
    Scottsdale Arizona
    #6
    Okay

    Thanks, I'll get back into this tomorrow.
     
  7. Tim in Scottsdale thread starter macrumors member

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    Mar 13, 2016
    Location:
    Scottsdale Arizona
    #7
    Guys

    Running extended hardware test now, indicating that could take an hour or longer.
     
  8. Tim in Scottsdale thread starter macrumors member

    Joined:
    Mar 13, 2016
    Location:
    Scottsdale Arizona
    #8
    Drat

    Hardware test reveals no problems but cannot boot. All suggestions are welcome.
     
  9. Fishrrman macrumors G4

    Fishrrman

    Joined:
    Feb 20, 2009
    #9
    Tim wrote:
    "Hardware test reveals no problems but cannot boot. All suggestions are welcome."

    Sounds like a corrupted OS.
    Then again, could be a hardware problem with the internal boot drive (but wouldn't the hardware test pick up on this?).

    Can you boot to recovery mode?
    If so, try an OS re-install.

    Otherwise, you need a BOOTABLE EXTERNAL DRIVE of some sort.
    Something that can "get you to the finder".
    Or a bootable USB flashdrive with an OS installer on it.

    I always have a second fully-bootable drive online and available to me, ALWAYS.
    It makes problems like this far FAR easier to diagnose.
     
  10. Tim in Scottsdale thread starter macrumors member

    Joined:
    Mar 13, 2016
    Location:
    Scottsdale Arizona
  11. DeltaMac macrumors 604

    DeltaMac

    Joined:
    Jul 30, 2003
    Location:
    Delaware
    #11
    Do you mean that safe mode doesn't make a difference - or that you can't boot into safe mode at all?
    Your posts all lead into the likelihood that your hard drive is failing, or failed already. As safe mode uses the same boot partition, then you can probably expect that safe mode won't work either.

    The hardware test does not do any extensive test of the hard drive, and really will pass the drive, as long as the drive responds as a storage device (but doesn't test to see if it is actually bootable) Your Disk Utility is a good test for that, and the fact that you can't boot to the drive is really the best test.
    Did you find your original installer DVD?
    Have you tried booting to Internet Recovery? Again, restart, holding Option-Command-R. If successful, you should see a spinning world (not the Apple icon). That will let you run Disk Utility to test the hard drive directory, and you can also download and install OS X. The internet recovery will upgrade you to Lion.
     
  12. Tim in Scottsdale thread starter macrumors member

    Joined:
    Mar 13, 2016
    Location:
    Scottsdale Arizona
    #12
    It won't finish booting safe mode, I just see a gear spinning on a gray background
     
  13. Fishrrman macrumors G4

    Fishrrman

    Joined:
    Feb 20, 2009
    #13
    Tim wrote that...
    ... can't boot to safe mode
    ... can't get to recovery partition, either?

    Again...
    ... You're going to have to come up with "an external way" of booting.

    It could be a USB flashdrive that has a copy of the installer on it.
    It could be a DVD copy of the install software
    It could be an external, bootable drive that is capable of booting your computer.

    Do you live within distance of a brick-n-mortar Apple store?
    If so, I suggest you make an appt. at the Genius Bar and see if they can help with obtaining something that could boot the Mac...

    Otherwise, you're going to keep "goin' in circles" and getting nowhere...
     
  14. Tim in Scottsdale thread starter macrumors member

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    Mar 13, 2016
    Location:
    Scottsdale Arizona
    #14
    Guys

    There is a reliable Mac repair outfit near by, gonna call them on Tuesday.
     

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