Windows will install, but OS X won't...

Discussion in 'iMac' started by AL1630, Mar 2, 2018.

  1. AL1630 macrumors 6502

    AL1630

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    Apr 24, 2016
    Location:
    Idaho, USA
    #1
    I got a 2009 i7 iMac cheap from a friend that was upgrading, and I formatted the hard drive. When I went to install Snow Leopard from a CD, It would get part way through, then the install would fail. I've used this disc recently in other macs, and it works fine. I tried to install windows 7 from a CD just for kicks, and it works perfectly. Anyone know what the problem might be?
     
  2. MacDawg macrumors Core

    MacDawg

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  3. AL1630 thread starter macrumors 6502

    AL1630

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    Apr 24, 2016
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    #3
    Right before attempting to install OS X I formatted it as OS X Extended (Journaled), and Windows is NTFS.
     
  4. nambuccaheadsau macrumors 68000

    nambuccaheadsau

    Joined:
    Oct 19, 2007
    Location:
    Nambucca Heads Australia
    #4
    Tell us about the CD. Is it a genuine or a hemm hemm 'copy'?

    If it is the 27" model it requires a minimum OS X.6.1 system disc or a retail install DVD. Version X.6 would not work. Also if you used BootCamp should have put OS X on first, and if you allowed the Windows install to format the drive NTFS without creating partitions, OS X will not install on NTFS.

    Suggest the cart is in front of the horse maybe?
     
  5. AL1630 thread starter macrumors 6502

    AL1630

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    Idaho, USA
    #5
    It's the genuine 10.6.3 retail disk. I tried OS X first, and when that didn't work I decided to try Windows just to see if I could get a usable computer.
     
  6. old-wiz macrumors G3

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    West Suburban Boston Ma
  7. AL1630 thread starter macrumors 6502

    AL1630

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    Idaho, USA
  8. Fishrrman macrumors P6

    Fishrrman

    Joined:
    Feb 20, 2009
    #8
    Try creating a bootable USB flash drive with the Mountain Lion (10.8) installer (assuming you can find it). El Capitan might also work.

    Then,
    - boot from the flashdrive
    - NUKE THE DRIVE BACK TO ZERO (Mac OS extended with journaling enabled)
    - Try a Mac OS install "from there"...
     
  9. Significant1 macrumors 6502a

    Joined:
    Dec 20, 2014
    #9
    If it is a 27", it support High Sierra and you might as well install that right away and be on a supported OS. (typing this on 2009 27" running High Sierra)
     
  10. AL1630 thread starter macrumors 6502

    AL1630

    Joined:
    Apr 24, 2016
    Location:
    Idaho, USA
    #10
    Ok, I tried an El Capitan USB and it worked. Not sure why the CD didn't though, it worked fine on a different computer last week. I'll try the High Sierra Upgrade and see if it works.
     
  11. nambuccaheadsau macrumors 68000

    nambuccaheadsau

    Joined:
    Oct 19, 2007
    Location:
    Nambucca Heads Australia
    #11
    If it has an SSD sure go with High Sierra. If a slower platter drive suggest leaving it at El Capitan.
     
  12. Fishrrman macrumors P6

    Fishrrman

    Joined:
    Feb 20, 2009
    #12
    OP:

    If you have El Capitan running ok, I'd advise against an attempted High Sierra install.

    Leave well enough alone!
     
  13. Significant1 macrumors 6502a

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    Dec 20, 2014
    #13
    El Capitan is unsupported. I have High Sierra running very well on an 2009 27" Imac.
     
  14. Fishrrman macrumors P6

    Fishrrman

    Joined:
    Feb 20, 2009
    #14
    "El Capitan is unsupported"

    This is NONSENSE.
    El Cap is still receiving security updates, if that matters to you.

    Frankly, it DOESN'T "matter" to me. I use whatever OS I wish, and don't give a hoot about "security". Not something I worry about.
     
  15. Significant1 macrumors 6502a

    Joined:
    Dec 20, 2014
    #15
    Ok. Half a year more if security updates, if apple support two previous versions. It's ok not to be first mover, of you worry about stability (I do), but then go with Sierra. I really see no point in El Capitan at this point with a clean install. But then again, after more than a half year old fixes, I would not call High Sierra a first mover installation either. I myself waited till early January before upgrading from Sierra.
     

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14 March 2, 2018