Enable 64 bit extensions?

Discussion in 'MacBook Pro' started by GVWR, Jun 29, 2011.

  1. GVWR macrumors newbie

    Joined:
    Aug 29, 2010
    Location:
    State of Confusion
    #1
    System Profiler says "64-bit Kernel and Extensions: No"
    MBP5,3 with 4G of RAM and an Apple TS256A SSD.

    I've tried several of the recommended ways to enable it but none have worked so far.
    Any suggestions?
     
  2. snaky69 macrumors 603

    Joined:
    Mar 14, 2008
    #2
    Restart, reboot holding the 6 and 4 keys. You are simply booted in the 32-bit kernel as is default on all Macs.
     
  3. tonyunreal macrumors regular

    tonyunreal

    Joined:
    Feb 25, 2010
    #3
    All macs except for this year's models of iMac and MacBook Pro, they start in full 64-bit mode by default.
     
  4. hehe299792458 macrumors 6502a

    hehe299792458

    Joined:
    Dec 13, 2008
    #4
    right. My MBP boots in 64bit mode by default. However, it's really not that large of a difference compared to 32bit.
     
  5. sketdansu macrumors member

    Joined:
    May 25, 2011
    #5
    Except for Clear* USB Modems which don't work in 64-bit..smh
    *Lazy Bums
     

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