Came w/ Mavericks, can i install ML?

Discussion in 'OS X Mavericks (10.9)' started by quaresma, Jan 7, 2015.

  1. quaresma macrumors newbie

    Joined:
    Jan 20, 2013
    #1
    Hi. I bought a MacBook Air 13 early 2014, and just wanted to know if I can install Mountain Lion on it?

    My machine came with Mavericks, is there some sort of protection that will deny downgrading to ML?
     
  2. tyche macrumors 6502

    Joined:
    Jul 30, 2010
    #2
    No with a small maybe, yes. No, you can't install an older version of OS X on the computer than it shipped with.

    What you can possibly do is install ML on a usb drive and boot that. Not ideal for a portable but I've read that works.

    But don't go trying to install on the internal drive.
     
  3. chrfr macrumors 603

    Joined:
    Jul 11, 2009
    #3
    No, external or internal drive doesn't matter. The 2014 Macbook Air cannot boot from any version of 10.8.
     
  4. vista980622 macrumors 6502

    Joined:
    Aug 2, 2012
    #4
    The 2014 MacBook Air will boot OS X 10.8.5 and work without any issue, if pre-installed on an external drive.

    ----------

    No there isn't any prevention. The 2014 MacBook Air will boot OS X 10.8.5 and work without any issue, if OS X 10.8.5 is pre-installed on an external drive.
    But with Mountain Lion, you may experience decreased battery life since many power optimisations added in OS X 10.9 are absent in previous versions.
     
  5. hallux macrumors 68020

    hallux

    Joined:
    Apr 25, 2012
    #5
    10.8.5 won't include the kexts needed to support the hardware in the 2014 MBA. The TB2 ports won't work, graphics may be an issue (different graphics processor than any model supported by 10.8.5 would have), among other things. This is the reason Apple says you can't use an OS that is older than that which the computer shipped with.

    Exceptions to that would be like a Mid 2012 MBP that was bought in December, it could still run Lion even though it shipped with ML since the model was originally shipped with Lion in June 2012.
     
  6. chrfr macrumors 603

    Joined:
    Jul 11, 2009
    #6
    I stand corrected. Given that the mid 2013 Air, which is the same hardware as the 2014 Air, shipped with 10.8.4, 10.8.5 should indeed work fine.
     
  7. SlCKB0Y macrumors 68040

    SlCKB0Y

    Joined:
    Feb 25, 2012
    Location:
    Sydney, Australia
    #7
    My Late 2011 Macbook Pro came with Lion, *Never* shipped with Snow Leopard, and worked perfectly with 10.6.8.

    ----------

    The early 2014 Macbook Air does not have Thunderbolt 2 and it has HD5000 gfx, exactly the same as the 2013 model.
     
  8. SlCKB0Y macrumors 68040

    SlCKB0Y

    Joined:
    Feb 25, 2012
    Location:
    Sydney, Australia
    #8
    What is the reason you need mountain lion so badly?
     

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