Results 1 to 9 of 9
  1. #1

    hojkoff_101's Avatar
    Member Since
    Oct 18, 2005
    Location
    Edinburgh Scotland
    Posts
    225
    Specs:
    Macbook 2.1GHz Intel Core 2 Duo, 4Gb RAM
    Why can't I boot into 64 bit!
    Right I know that this has probably been asked before, but why won't my mac boot into 64 bit? I hold down the 6 and 4 keys on start up and no luck!

    My mac is 64 bit enabled, when I type "ioreg -l -p IODeviceTree | grep firmware-abi" into the terminal I get the response;

    | | "firmware-abi" = <"EFI64">

    Any ideas why it won't work. I'm running snow leopard as well by the way.

    Thanks!


    Andy

    PS. Please please don't come back with "why do you want to boot into 64?" I have my reasons!

  2. #2

    JUKE179r's Avatar
    Member Since
    Nov 01, 2009
    Location
    DohaLondonVegas
    Posts
    886
    Specs:
    MacBookPro 11,2 <--DAW!!!
    I don't know much about Powerboook G4's but isn't 64bit only allowed on Intel processor Mac's when running SL? Just guessing...
    MBP 11,3 | Logic Pro X | Ableton Live 9 | Traktor Pro 2 | AKAI MPC2000XL, X7000, MPK-49 | Roland MV-8000, SP-808, TR-707, TR-808 & TR-909 | Ensoniq ASR-10 | x0xb0x #911 & Willzyx | Denon DN-MC6000 | (3) Technics SL-1200MK1 | 4000+ vinyl records

  3. #3


    Member Since
    Jan 27, 2007
    Location
    *Brisvegas*
    Posts
    5,658
    Specs:
    17 inch 2 GHz C2D imac (5,1) with 3GB DDR2 RAM, X1600 (128MB memory) GPU - OSX 10.6.3
    What is the specs of the mac that has Snow Leopard on it?
    Why I ask is because the mac in your mac specs Powerbook G4 can not install Snow Leopard.

  4. #4

    hojkoff_101's Avatar
    Member Since
    Oct 18, 2005
    Location
    Edinburgh Scotland
    Posts
    225
    Specs:
    Macbook 2.1GHz Intel Core 2 Duo, 4Gb RAM
    Oh yeah sorry I haven't updated that for years now!

    I'm running a Macbook 2.1GHz Intel Core 2 Duo

  5. #5

    cwa107's Avatar
    Member Since
    Dec 20, 2006
    Location
    Lake Mary, Florida
    Posts
    26,943
    Specs:
    15" MBP, Core i7/2GHz, 8GB RAM, 480GB Crucial M500 SSD
    Quote Originally Posted by hojkoff_101 View Post
    Oh yeah sorry I haven't updated that for years now!

    I'm running a Macbook 2.1GHz Intel Core 2 Duo
    From what I understand, none of the MacBook models can boot into the 64-bit kernel. But that doesn't mean you can't run 64-bit apps, or address <4GB of memory.

    In all honesty, the 64-bit kernel is really only useful in the server market. And that's why Apple has it restricted to the Mac Pro and MBP models.

    Read more here:

    http://www.mac-forums.com/forums/os-...means-you.html
    Liquid and computers don't mix. It might seem simple, but we see an incredible amount of people post here about spills. Keep drinks and other liquids away from your expensive electronics!

    https://youtu.be/KHZ8ek-6ccc

  6. #6

    hojkoff_101's Avatar
    Member Since
    Oct 18, 2005
    Location
    Edinburgh Scotland
    Posts
    225
    Specs:
    Macbook 2.1GHz Intel Core 2 Duo, 4Gb RAM
    Quote Originally Posted by What 64 means for you
    If you are using an Intel Core 2 Duo on the other hand, you are using a 64-bit processor.
    This quote is straight from the thread that you've linked to which I also read before posting this, I'm running a Core 2 Duo so surely from that quote I'm able to boot into 64 bit. Although currently I can't.

    Additionally, | | "firmware-abi" = <"EFI64"> suggests that I can go 64 bit.

    Quote Originally Posted by cwa107
    In all honesty, the 64-bit kernel is really only useful in the server market. And that's why Apple has it restricted to the Mac Pro and MBP models.
    I'm not interested in how useful it is for me at the moment I want to get my Mac running it 1st. I'm not trying to be rude, but I did say in my initial post that I wasn't interested in the pros and cons, I want to get it to boot into 64 bit. I'm not really looking for this to becoming a place where people can advise me whether I should or shouldn't. I can easily revert to 32 bit if it all goes pear shaped, but that's not the issue right now.

    By the looks of things I CAN boot into 64 bit, right now I can't seem too. Any suggestions anyone?

  7. #7


    Member Since
    Sep 09, 2009
    Location
    Down Under :D
    Posts
    5,484
    Specs:
    Back to my old 2.2GHz C2D MB after selling my MBP and wondering what my next Mac will be :)
    It's 64-bit capable, but your Mac (just like mine) doesn't boot into 64-bit.
    It runs 64-bit apps, as you will see if you open up activity monitor and have a look.

  8. #8

    bobtomay's Avatar
    Member Since
    Dec 22, 2006
    Location
    Texas, where else?
    Posts
    26,495
    Specs:
    15" MBP '06 2.33 C2D 4GB 10.7; 13" MBA '14 1.8 i7 8GB 10.11; 21" iMac '13 2.9 i5 8GB 10.11; 6S
    cwa is correct in that 64 bit boot is disabled in all non-Pro machines. On your specific machine, there are no 64 bit drivers for the Intel X3100.

    I have never done so and you're on your own here, but you can try Amit Singh's hack.

    Mac OS X Internals: The Blog Blog Archive Is Your Machine Good Enough for Snow Leopard K64?

    Or a ready made boot.efi from netkas.org and a little terminal effort.

    I would suggest you read both thoroughly.
    I cannot be held responsible for the things that come out of my mouth.
    In the Windows world, most everything folks don't understand is called a virus.

  9. #9


    Member Since
    Jan 22, 2010
    Location
    Victoria, BC
    Posts
    20,911
    Specs:
    Mid-2012 MBP (16GB, 1TB HD), Monoprice 24-inch second monitor, iPhone 5s 32GB, iPad Air 2 64GB
    Since all the individual apps can run 64-bit, what difference does it make?

    The answer is "almost none at all, in point of fact."

    One of the reasons Apple disabled this is because the system would actually run slightly SLOWER if it were 100&#37; 64-bit. Real 64-bit computing needs MASSES of RAM to really flex its advantages, and of course these machines simply can't address really significant amounts of RAM.

    People just have this crazy idea that 64-bit anything must be twice as "fast" as 32-bit anything, and its utter nonsense. The difference 64-bit makes isn't about speed as most people think of it, it's about WORKSPACE.

    At <8GB of RAM there's not likely to be much if any noticeable performance advantage to 64-bit unless you're doing some very simple math jobs.

    OTOH, take a machine with 32GB of RAM and run it 64-bit and now you're cookin' with gas!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Upgrading EFI from 32-bit to 64-bit on Mac Pro with 64-bit processor
    By Gemless Ear in forum OS X - Operating System
    Replies: 4
    Last Post: 04-21-2014, 12:55 AM
  2. Replies: 4
    Last Post: 01-04-2013, 12:29 PM
  3. need help for boot camp 3.1 on vista 32 bit
    By Aleem-S in forum Running Windows (or anything else) on your Mac
    Replies: 3
    Last Post: 02-06-2010, 03:30 PM
  4. OS 10.6: 32-bit vs. 64-bit boot up - what "Legacy" apps NEED 32-bit??
    By ticedoff8 in forum OS X - Operating System
    Replies: 3
    Last Post: 11-06-2009, 11:15 AM
  5. Boot Camp now supports 64-bit?
    By fleurya in forum Running Windows (or anything else) on your Mac
    Replies: 1
    Last Post: 01-21-2008, 08:23 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •