Mavericks on Retina iMac

Discussion in 'iMac' started by paelzersebbi, Nov 18, 2014.

  1. paelzersebbi macrumors member

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    Jul 11, 2011
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    Mainz, Germany
    #1
    I know, it is probably not supported since they only support the most recent OS version upon release.

    However, did anyone actually try to install it?
     
  2. h9826790 macrumors 604

    h9826790

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    #2
    There should be no driver in Mavericks to handle the RiMac's hardware.
     
  3. yjchua95 macrumors 604

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    #3
    It won't work, simply because Mavericks doesn't have the necessary drivers to support the R9 GPUs.
     
  4. xgman macrumors 601

    xgman

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    #4
    Are we sure of that?
     
  5. yjchua95 macrumors 604

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    #5
    Very. I tried booting off an external Mavericks disk myself on my riMac. It just won't boot.
     
  6. paelzersebbi thread starter macrumors member

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    #6
    How do drivers under OSX work? Can you just take the Yosemite drivers for the AMD chips and integrate them into Mavericks?
     
  7. Antipode2012 macrumors newbie

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    Jul 15, 2012
    #7
    I'm interested in this too. My institution has told me that they are planning on running Mavericks on my new iMac when it arrives. Hmmm.
     
  8. blueroom macrumors 603

    blueroom

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    Toronto, Canada
    #8
    If it's stability you're worried about futzing with drivers to get an older OS X working will make it unstable.
     
  9. redheeler macrumors 603

    redheeler

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    Oct 17, 2014
    #9
    I'm interested to see if this is doable as well. Since I never purchased the Yosemite version of OS X Server I may want to run Mavericks from time to time. Luckily I do have a Mac mini running Mavericks, so this hasn't crippled me.
     
  10. touchUpInside, Nov 18, 2014
    Last edited: Nov 18, 2014

    touchUpInside macrumors member

    touchUpInside

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  11. redheeler macrumors 603

    redheeler

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    Oct 17, 2014
    #11
    I run Mavericks in Parallels and it sucks, especially the graphics. It'll show in Retina, but all the animations are full of lag (it even shows 256 MB VRAM though I gave it 1024). Wake from sleep does not work, it will randomly go to the login screen from time to time, the problems go on and on. Checked the VM settings, nothing seems to resolve these problems.
     
  12. redheeler macrumors 603

    redheeler

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    Oct 17, 2014
    #12
    Here's proof that it actually does work in Parallels. Sort of.
     

    Attached Files:

  13. goMac macrumors 603

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    Apr 15, 2004
    #13
    Good luck to your institution getting that working. Mavericks won't boot on the retina iMac. They might need to rethink that. :)
     
  14. Antipode2012, Nov 18, 2014
    Last edited: Dec 1, 2014

    Antipode2012 macrumors newbie

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    #14
    I'll let you know what comes of it.
     
  15. h9826790 macrumors 604

    h9826790

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    #15
    There is no hardware graphic acceleration in parallel OSX, that's why the graphic sucks. ATM, it's impossible to get that due to the restriction from Apple, not Parallel's fault.
     
  16. Tanda macrumors newbie

    Joined:
    Sep 13, 2012
    #16
    September 7, 2015 Update

    Latest build of Mavericks - OS X 10.9.5 (13F1112) seems incompatible with iMac 15,1 (Retina 27-inch Late 2014)

    I was unable to boot from an Mavericks Install Drive built using a fresh download from App Store.
     

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