Imac 64 vs 32 bit

Discussion in 'NTFS for Mac & ExtFS for Mac' started by billt63000, Dec 24, 2009.

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  1. billt63000

    billt63000 Registered Member

    Dec 24, 2009
    I have an iMac (early 200:cool: 24" 2.8GHz 4GB 800MHz DDR2 SDRAM OS 10.6.2 Snow Leopard.
    How do I know if I am running in 64 or 32 bit mode? Nothing in the About this Mac section of the Apple menu notes this as I can see. This appears to be very important to know for the proper operation of Paragon for Mac OS X version 7.0.3.
    Thank you
  2. Mephist

    Mephist Paragon Support

    Nov 19, 2009
    Click "apple" in the upper-left corner of the screen and select "about this mac". in appeared window click "More info...". System profiler will be opened. In the left tab select "Software". In System software overview you will see the string "64-bit kernel and extensions". "Yes" means you have 64-bit kernel. "No" means 32-bit kernel.
  3. rpt007

    rpt007 Registered Member

    Jan 13, 2010
    ... another way to tell if your Mac has 32-bit or 64-bit EFI, is to run the following command in the terminal:
    ioreg -l -p IODeviceTree | grep firmware-abi

    (BTW: that first switch is a lower-case L, not a 1.)

    Answer will be either “firmware-abi” = <“EFI32”> or = <“EFI64”>

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