Boot in 32 bit

I do need the Cisco VPN Client to get connected to my company.
They only provide software that runs under leopard and it is not an application that runs under a 64 bit system.
is ther a chance to boot lion in 32 bit mode to install the software and use it?
many thanks

I have the identical problem:
brand new Macbook Air (Summer 2012)
Mac OS 10.7.4
Kernel patch 11.4.2
it will not boot in 32bit modus - not with holding down 3+2 during startup and neither after
sudo systemsetup -setkernelbootarchitecture i386
What´s wrong???

Similar Messages

  • EFI update tu support booting into 64 bit OS

    Hello,
    my mac (see signature) does not support booting into 64 bit in Snow Leopard. I also have troubles to install any 64 bit Windows.
    The tool: http://www.ahatfullofsky.comuv.com/English/Programs/SMS/SMS.html says:
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    thanks

    Hi,
    try this
    http://www.ahatfullofsky.comuv.com/English/Programs/SMS/SMS.html
    It seems that your model is in the list of supported models that can boot the 64 bit kernel.
    I had the same issue with my macbook pro with identifier MacBookPro4,1 and booting with 64 bit kernel solved it.
    I hope you can solve your problem!
    Sorry for my bad English :-D

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    Snow Leopard changed things

  • A late 2007 Mac Pro (2,1) no longer boots into 64-bit Snow Leopard

    In Snow Leopard 10.6.7, my late 2007 Mac Pro (2,1/3.0 GHz/Dual Quad-Core Intel Xeon) no longer seems to be booting into 64-bit mode. I've tried holding down the 6 and 4 keys during startup and even used a Terminal sudo command to force the machine to always boot into 64-bit mode. No matter what I try, an About This Mac>More Info>Software check only reports the following:
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    Hatter: Thanks for the feedback and links. Well, as described in one of the threads you linked to, the document below reinforces your assertion that only Mac Pro's 3,1 or later (early 2008) support 64-bit booting in Snow Leopard:
    http://support.apple.com/kb/HT3770
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    I guess I'm mistaken. Certainly, this issue can be confusing. When I read them out loud to myself, even perfectly-written, accurate explanations on the subject can sound like a circular, non-sensical George Bush rationalization being delivered by comic Will Ferrell. I must not be correctly recalling the details of booting into 64-bit mode with this machine. And I guess that since Photoshop has its own memory management scheme, and I only have 16 gigabytes of SDRAM installed anyway, it doesn't matter that much. Furthermore, in one of your links, Jason Snell of Macworld writes:
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  • Does my macbook air boot in 64 bit or 32 bit kernel

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    I read that MacBooks, including Air's, will not boot 64-bit. Apple has turned that ability off in the OS. Why? One can only speculate.
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  • Boot in 64-bit mode

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  • Booting in 64-bit mode.

    Correct me if i am wrong:
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    I did this. Is there any way to tell I am running in 32 or 64-bit mode?
    Also, once I have now booted in 64-bit, what mode will it boot up in when I restart? back to 32, or stays in 64?

    Have a look here.
    http://support.apple.com/kb/HT3773?viewlocale=en_US
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  • Holding 3 and 2 will not boot in 32 bit mode

    Hello. I need to boot in 32 bit mode to run Cisco VPN Client on my Macbook Air (version 10.7.4). This worked earlier this week but I've now tried for 3 days probably 20 plus time and cannot get it to take.  Is there another way to boot in 32 bit mode?
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    uname -v
    Darwin Kernel Version 11.4.2: Wed May 30 20:13:51 PDT 2012; root:xnu-1699.31.2~1/RELEASE_X86_64
    Thanks.

    I have the identical problem:
    brand new Macbook Air (Summer 2012)
    Mac OS 10.7.4
    Kernel patch 11.4.2
    it will not boot in 32bit modus - not with holding down 3+2 during startup and neither after
    sudo systemsetup -setkernelbootarchitecture i386
    What´s wrong???

  • Can Mac mini boot into 64-bit kernel

    http://macperformanceguide.com/SnowLeopard-64bit.html says:
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    | | "firmware-abi" = <EFI64>
    As shown above, the firmware-abi has the value EFI64, indicating that my Mac Pro is 64-bit capable. If it reads EFI32, then your Mac cannot be booted into a 64-bit kernel.
    ...well, my Mac mini displays that EFI64 64-bit info, but when booting with the "64" keys down it nevertheless uses the 32-bit kernel.
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    What you are missing is that Apple has written into the boot ROM for certain Macs which meet the criteria to not be able to boot with the 64-bit kernel. The Mac mini is not allowed to boot into 64-bit mode by Apple. There is a list of non-pro Macs hard coded into the EFI boot firmware that tells it not to allow these Macs to boot into 64-bit mode. The Mac mini is on the list! Try as you may the Mac mini will not do it without a hack.
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  • Mac OSX 10.6.7 don't boot in 64-bit mode

    Every time I try to boot in 64-bit mode, it freezes in boot screen with the "NO ENTRY" symbol on it. When booting in 32-bit modes, it goes OK.
    But I have 8GB RAM, so 32-bit + 8GBRAM = Kernel Panic.
    Any ideas of how to solve it?
    Best,
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    You have some 32-bit driver (that you didn't have before it sounds like).
    Wherever you got the idea that OS X and some 4GB limit, each application or thread might have 4GB address space, but OS X has supported 32 and even 48GB RAM on appropriate hardware.
    If this was a RAM issue, you could remove your (3rd party) RAM and still boot in 64-bit kernel mode.
    As to whether your system is benefiting from 64-bit kernel mode I'd take a look at
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  • Can't boot into 64 bit

    I've tried the holiding down 6 4 keys during boot, I've done the terminal comand to set the startup drive to automatically boot into 64 bit mode... nothing works.
    At the end of my rope. Thoughts?
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      Model Identifier:          MacBook4,1
      Processor Name:          Intel Core 2 Duo
      Processor Speed:          2.1 GHz
      Number of Processors:          1
      Total Number of Cores:          2
      L2 Cache:          3 MB
      Memory:          4.5 GB
      Bus Speed:          800 MHz
      Boot ROM Version:          MB41.00C1.B00
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      Kernel Version:          Darwin 11.3.0
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      User Name:          ***************************
      Secure Virtual Memory:          Enabled
      64-bit Kernel and Extensions:          No
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    Ya, it's too bad. I've known for a while that when this laptop reaches its end I'll be going to Windows 7 and a new laptop at half the price.
    I'm a little sad because I didn't know the end was so close, but if I can't even run the new OS coming out, well, that's pretty much it.
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  • Mac Pro not able to boot into 64 bit kernel?

    Hello,
    I've been trying to boot while using the 6 and 4 buttons held down to no avail. This mac pro was bought in 2007 (work computer). Am I not able to boot into 64 bit mode with Snow Leopard? If so, does that mean I can't take advantage of the 64 bit kernel?
    Thanks,
    Scott

    Man, Yes, when I am rendering all 8 cores in Maya, up to 4 gigs of ram are being used. Why is that so hard to believe? I should be able to render in RAM preview in After Effects a whole lot more than i can now without cacheing.!!!!
    Is Maya a 64 bit application? If Maya is not using more than 4GB, than you should be talking to the Maya developers.
    You should be able to use Applications -> Utilities -> Activity Monitor and look at the "Kind" field. If it says "intel (64 bits)", then it is a 64 bit application.
    How many times do I have to state "YES, I will be using more than 4 gigs of RAM per program"?
    Why is it the tech people really don't understand how intensive program dynamics like Maya and Blender are,
    You are responding to my post, so I'm going to say, I have been working for major computer manufactures since the early 70's working with "Big Iron" computer systems, not PCs, and I most likely know a lot more about how computers work, then many computer users. Please do not tell me I do not understand. I've been working with 64 bit code since the early 90's.
    and yet Apple touts their excellence in 64 bit programs like AFX, yet, I can't use more than 4 gb of RAM?
    Are you saying AFX (is that After Effects?) is not a 64 bit application yet? If not, then I suggest you talk to Adobe, not Apple.
    Just for fun, I wrote a sample program, which allocated a large amount of memory. I ran it on my iMac with is booted with a 32 bit 10.6.2 Snow Leopard kernel. Here are the results:
    PID RESIDENT VIRTUAL PageFlt Reclaim COMMAND
    54296 4.74G 9.32G 0K 0K tmp
    My program has more than 4GB of physical RAM (4.74GB), and a virtual memory size of 9.32GB.
    If I use Activity Monitor, I can see that my program is listed with a Kind of "intel (64 bit)".
    So if Maya cannot use more than 4GB of memory, it is a Maya problem. Talk to the Maya developers.
    We aren't cows Apple. We are people with limited money trying to make it in the world. Not every mac pro user is a business and we don't want too much control.
    You are not talking to Apple, just other Mac users. If you wish to tell something to Apple, I would encourage you to use either:
    <http://www.apple.com/feedback/macosx.html>
    or
    <http://bugreporter.apple.com>
    Free ADC (Apple Developer Connection) account needed for BugReporter

  • Can I boot into 32 bit mode on a 64 bit. If so how will this affect my 8gb ram usage?

    It's basically all in the title. I was just wondering what differences there would be if I booted in 32 bit mode on my early 2011 macbook pro.

    when you press the power button
    hold down keys 6 and 4 (together)
    till you see the apple logo and the spinning wheel.
    that will enable 64-Kernel and extensions.
    but honestly i think wouldnt benefit you at all.
    unless your a developer and want that enable to test out your own applications/kexts.
    Good Luck!

  • Which of These Methods to Permanently Boot to 64-Bit

    Hi. My iMac is the late i7 2009 model with 8GB. I'm guessing at my current 32-bit mode, once it needs more than 4GB, it won't be able to do so?
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    If 64-bit mode is a recommended default, I found two methods. Which one should I use?
    1)  <key>Kernel Flags</key>
        <string>arch=x86_64</string>
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    Sadnakhleh wrote:
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  • Booting in 64 Bit--Wow

    I wanted to share my recent 64 bit experience and get others' impressions. I have an early 2009 iMac, 3.06 ghz (9,1). I just booted in 64 bit mode for the first time. Instead of holding down 6,4, I used this software which worked flawlessly (I'm not recommending it, just saying this is what I use--you are on your own however):
    http://www.ahatfullofsky.comuv.com/English/Programs/SMS/SMS.html
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    I have not noticed the same things. You might want to do a test similar to the one I report on below just to check the validity of your at least mostly seat of the pants comparisons.
    Note that, in principle, there should be no advantage to running 64-bit software (or 32-bit software) in 64-bit kernel mode. However, a great deal of 32-bit software will run in 64-bit mode. The disadvantage of 64-bit mode is that all 32-bit software (e.g., Photoshop) will not run in this mode--so if you suddenly decided to run Photoshop, then you'd have to reboot.
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    (1) 64-bit Geekbench run in 64-bit mode--4,268 avg of 5
    (2) 64-bit Geekbench run in 32-bit mode--4,264 avg of 5
    (3) 32-bit Geekbench run in 64-bit mode--3,910 avg of 5
    (4) 32-bit Geekbench run in 32-bit mode--3,907 avg of 5
    Note that there is no significant kernel-mode-related difference in performance for 64-bit Geekbench. Same with 32-bit Geekbench.

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