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Thread: i386 kernel

  1. #1


    Member Since
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    i386 kernel
    I have just upgrade to snow leopard .
    It tells me now that now running version 10.6.1
    But if I give in terminal the command uname - a it says i386 that means that it is 32 bits version
    And everybody told me that snow leopard is 64 bits.
    Or is the branding in the kernel ?
    Can anybody helps me out ?

  2. #2

    McBie's Avatar
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    you need to press and hold the 6 and the 4 keys when booting OS X

    By default, the 32 bit version of OS X is loaded

    Cheers ... McBie
    A computer lets you make more mistakes faster than any invention in human history - with the possible exceptions of handguns and tequila.
    The bitterness of poor quality remains long after the sweetness of low price is forgotten.

  3. #3


    Member Since
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    NO it does not work .
    It stills says i386

  4. #4

    McBie's Avatar
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    2013 MBA 13" - OS X 10.11
    In System Profiler, check this ....

    System Software Overview:

    System Version: Mac OS X 10.6.1 (10B504)
    Kernel Version: Darwin 10.0.0
    Boot Volume: Macintosh HD
    Boot Mode: Normal
    Computer Name: MDNMBP
    User Name:
    Secure Virtual Memory: Enabled
    64-bit Kernel and Extensions: Yes
    Time since boot: 5 days 2:15

    Cheers ... McBie
    A computer lets you make more mistakes faster than any invention in human history - with the possible exceptions of handguns and tequila.
    The bitterness of poor quality remains long after the sweetness of low price is forgotten.

  5. #5


    Member Since
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    Late 2013 rMBP, i7, 750m gpu, OSX versions 10.9.3, 10.10
    What Mac do you have? from what I had read on various websites, if you have a Mac that has a 32bit EFI, it will block you from loading the 64bit kernel, and that 64bit kernel couldn't be loaded on any non-pro Macbook.

    It's been a long day and I don't have the links in front of me, but a quick search pulled up this here:

    Startup Mode Selector

    if you skip over the program information itself to further down the page, there is some description of the limitations put in place by Apple.
    My Macs: Late 2013 rMBP w/ 750m, 16Gig ram; 2013 Mac Pro 6 core w/ D700, 16Gig Ram; Mac mini G4, 1.25 GHz, 512m ram (server); Late 2011 11" MBA, 1.8GHz i7, 4Gig Ram, 256Gig SSD, HD3000; Powerbook 12" G4 1.33GHz running Linux; Apple TV (1080p version)

  6. #6


    Member Since
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    64 bit kernel and extension NO
    How can I change that ?

    regards

    I have a MAC PRO workstation 2 X intel dual core

  7. #7


    Member Since
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    If you have the 2006 Mac Pro (which is what it *sounds* like you have (2xdual core xeon) then you have a 32bit efi from what I understand - otherwise - no 64bit kernel
    My Macs: Late 2013 rMBP w/ 750m, 16Gig ram; 2013 Mac Pro 6 core w/ D700, 16Gig Ram; Mac mini G4, 1.25 GHz, 512m ram (server); Late 2011 11" MBA, 1.8GHz i7, 4Gig Ram, 256Gig SSD, HD3000; Powerbook 12" G4 1.33GHz running Linux; Apple TV (1080p version)

  8. #8

    vansmith's Avatar
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    Trust me, even if you could boot into a 64-bit kernel, you don't want it. Many programs have kexts that are compiled for a 32-bit kernel and won't work with a 64-bit kernel. Unless you are doing something that explicitly needs 64-bit support, avoid it for now.

    And yes, most of your applications are running as 64-bit applications. Just open up Activity Monitor and look at the "Kind" column. See link in sig for more info.
    Important Links: Community Guidelines : Use the reputation system if you've been helped.
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  9. #9

    McBie's Avatar
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    Quote Originally Posted by dobby View Post
    64 bit kernel and extension NO
    How can I change that ?

    regards
    Have a look at the link that Nethfel provided .... all the info is in there.

    Cheers ... McBie
    A computer lets you make more mistakes faster than any invention in human history - with the possible exceptions of handguns and tequila.
    The bitterness of poor quality remains long after the sweetness of low price is forgotten.

  10. #10


    Member Since
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    Late 2013 rMBP, i7, 750m gpu, OSX versions 10.9.3, 10.10
    here's a chart that a blogger put together based upon apples own data about which systems could use the 64bit kernel - and like vansmith said, it really isn't worth it - your apps that are 64bit will run in 64bit mode.

    Mac OS X 10.6 “Snow Leopard”: In Our Hands August 28! – Stephen Foskett, Pack Rat
    My Macs: Late 2013 rMBP w/ 750m, 16Gig ram; 2013 Mac Pro 6 core w/ D700, 16Gig Ram; Mac mini G4, 1.25 GHz, 512m ram (server); Late 2011 11" MBA, 1.8GHz i7, 4Gig Ram, 256Gig SSD, HD3000; Powerbook 12" G4 1.33GHz running Linux; Apple TV (1080p version)

  11. #11


    Member Since
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    Back to my old 2.2GHz C2D MB after selling my MBP and wondering what my next Mac will be :)
    I think that this link will help you:
    YouTube - Snow Leopard and 64-Bit Mode (MacMost Now 286)

  12. #12


    Member Since
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    It seems that if you know the EFI of you're system is enough to determine if it can ran 64 bits ,ore not
    My MAC has a EFI32 so it is the first Intel Xeon dual core , that only can run 32 bits
    If somebody needs the command it is ioreg -l -p IODeviceTree | grep firmware-abi

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