No 64bit kernel boot on late 2010 MBA?

Discussion in 'MacBook Air' started by double329, Jan 10, 2011.

  1. macrumors 6502

    Joined:
    Sep 10, 2008
    #1
    Has anyone tried or have any luck getting a new MBA to boot with 64bit kernel? I did a search in this forum. It sounded like no one has any luck since 09. I tried the step provided by Apple and other site, but no luck. My MBA is still booting with 32bit kernel???

    http://support.apple.com/kb/HT3773
     
  2. macrumors 6502

    gglockner

    Joined:
    Nov 25, 2007
    Location:
    Bellevue, WA
    #2
  3. macrumors 6502a

    Joined:
    Jun 27, 2004
    #3
    It seems like it's an artificial EFI limitation put in place by Apple.

    The Processors in the 2010 MBA lineup are 64-bit capable, so I don't see why it wouldn't boot in 64-bit unless Apple has specifically prevented it.

    That being said, from what I've read, there's not a lot of benefit to booting in 64-bit unless you're trying to address memory above 4GB (which you can't do on a MBA).
     
  4. macrumors G5

    gnasher729

    Joined:
    Nov 25, 2005
    #4
    32 bit kernel will handle 8 or 16 GB just fine. It's only when you have tons of memory (like 64 GB or more) where 64 bit kernel would make a difference.
     
  5. thread starter macrumors 6502

    Joined:
    Sep 10, 2008
    #5
    The MBA boot with 32 bit kernel. The 64bit app can still run on the 32bit kernel as 64bit app. The thing is: some 64 bit app will run as 32 bit mode unless you tell the app to run as 64bit. Adobe LightRoom is one of them. I had to tell the app to run at 64bit mode. I am sure there will be other apps like that. The point here is: if I have 64bit system, I want to run it as 64 bit :rolleyes:
     
  6. macrumors 6502

    gglockner

    Joined:
    Nov 25, 2007
    Location:
    Bellevue, WA
    #6
    +1. This is what I do all the time. To paraphrase Steve Jobs: "Not that big of a deal".
     
  7. 2IS
    macrumors 68030

    Joined:
    Jan 9, 2011
    #7
    Are any Apple flaws a big deal as far as Jobs is concerned?
     

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