how do you know which kernel you are in?

Discussion in 'macOS' started by Aven SkyGazer, Dec 27, 2009.

  1. Aven SkyGazer macrumors regular

    Joined:
    Nov 12, 2008
    #1
    how do you know find out while in operation which kernel you are running in ?
     
  2. celticpride678

    Joined:
    Feb 15, 2009
    Location:
    Boston, MA
    #3
    System Profiler>Software>64-bit Kernel and Extensions (Yes or No)
     
  3. robj macrumors regular

    Joined:
    Dec 23, 2009
    Location:
    Madrid, Spain
    #4
    As the post in osxdaily says, open a terminal and type uname -a

    I did it, and i found out that my MBP is running a 32 bit kernel. (!)

    I thought that this type of machine should be using a 64 bit kernel.
    I'll try to boot into 64 bit mode holding '6' and '4' during boot, but how can I make this mode the default?
     
  4. mkrishnan Moderator emeritus

    mkrishnan

    Joined:
    Jan 9, 2004
    Location:
    Grand Rapids, MI, USA
    #5
    I think this might work?

    http://netkas.org/?p=127
     
  5. robj macrumors regular

    Joined:
    Dec 23, 2009
    Location:
    Madrid, Spain
    #6
  6. kainjow Moderator emeritus

    kainjow

    Joined:
    Jun 15, 2000
    #7
    Couldn't you also open Activity Monitor and look at the Kind column for kernel_task? It should say Intel for 32-bit and Intel (64-bit) for 64-bit.
     
  7. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #8
    In the terminal, type uname -a

    If it ends in _x86_64 then you have the 64bit kernel.
     

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