64Bit Help!

Discussion in 'Mac & OS X' started by deleted account 106, Aug 28, 2009.

  1. deleted account 106

    deleted account 106 Member

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    Hi,
    I just pre-ordered Snow leopard

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    YAY, i was wondering if the 64Bit processes will work on the early 2008 white macbook? Or is the processor in this macbook only supporting 32Bit?

    EDIT: I just did some googling, and found out this macbook with the following terminal command:
    ioreg -l -p IODeviceTree | grep firmware-abi

    this returned gave:
    = <"EFI64">

    SO... this means that i should have the 64Bit support, BUT no becuase Apple disabled 64-bit kernel support for any macbooks, even with 64-bit efi!!!!
    So i did some more digging and found there are ways around this. Does anyone know any of these way to "unlock" the 64bit?
  2. ZunePod

    ZunePod Banned

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    So for all MacBooks the 64-bit is locked?
  3. deleted account 106

    deleted account 106 Member

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    Yes apparently so... The Non-Pro macbooks i mean. But i have just found a way to "unlock" it if you like

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    Go to /Library/Preferences/SystemConfiguration/com.apple.Boot.plist
    Find:

    <key>Kernel Flags</key>
    <string></string>

    and change it to

    <key>Kernel Flags</key>
    <string>arch=x86_64</string>

    Not 100% sure this does, but i am pretty sure it does. This will only work if you type the terminal command:
    ioreg -l -p IODeviceTree | grep firmware-abi

    and this returns as:
    = <"EFI64">
    Only edit this file if it returns as the EFI64 thing.
  4. jpga13

    jpga13 Banned

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    Don't do all that terminal crap, you are actually wasting your time.

    Here is a chart for you with lots of Mac computers and what they can do.


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  5. ZunePod

    ZunePod Banned

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    Should I do this before or after I upgrade?
  6. deleted account 106

    deleted account 106 Member

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    Do it after you upgraded to Snow Leopard, but make a back up of the old file! And then restart your Mac.
    Could you tell me if you notice any speed increases after editing this file please?

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