MacBook 5,1 is not booting into Snow Leopard 64-bit kernel

Discussion in 'MacBook' started by celticpride678, Oct 14, 2009.

  1. celticpride678

    Joined:
    Feb 15, 2009
    Location:
    Boston, MA
    #1
    I have been trying to boot into 64-bit kernel in Snow Leopard on my Late 2008 Aluminum MacBook (2.4 GHz), but it is not working. It is running the 64-bit EFI firmware and is updated to 10.6.1. Any idea on why and how to fix it?
     
  2. BaldiMac macrumors 604

    BaldiMac

    Joined:
    Jan 24, 2008
    #2
    Are you holding down the "6" and "4" keys during startup? Only the Xserve uses the 64-bit kernel by default.
     
  3. celticpride678 thread starter Guest

    celticpride678

    Joined:
    Feb 15, 2009
    Location:
    Boston, MA
    #3
    Yes.
     
  4. Eric S. macrumors 68040

    Eric S.

    Joined:
    Feb 1, 2008
    Location:
    Santa Cruz Mountains, California
    #5
  5. celticpride678 thread starter Guest

    celticpride678

    Joined:
    Feb 15, 2009
    Location:
    Boston, MA
    #6
    Do you think this will be changed in 10.6.2? This might be the dumbest move by Apple yet. If the computer can support it, why not allow it? They boasted that Snow Leopard is 64-bit, when only a minority can fully use 64-bit.
     
  6. NewMacbookPlz macrumors 68040

    NewMacbookPlz

    Joined:
    Sep 28, 2008
    #7
    What is it that you're doing, where you need the kernel to be able to address >4GB of RAM anyways? Any 64-bit capable app still runs in the 64-bit space unhindered by the kernel being in 32-bit mode.
     
  7. celticpride678 thread starter Guest

    celticpride678

    Joined:
    Feb 15, 2009
    Location:
    Boston, MA
    #8
    I understand that. But, I wanted to check the 64-bit kernel for myself and see if it has any difference with the 32-bit kernel.
     
  8. NewMacbookPlz macrumors 68040

    NewMacbookPlz

    Joined:
    Sep 28, 2008
    #9
    I wouldn't expect any visible/noticeable difference in day-to-day usage.
     
  9. jav6454 macrumors P6

    jav6454

    Joined:
    Nov 14, 2007
    Location:
    1 Geostationary Tower Plaza
    #10
    Using 32-bit or 64-bit kernel on a MacBook5,1 will show no difference.
     

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