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:
64 bit processor, 32 bit EFI, 32 bit kernel boot mode, 32 bit kernel
and its technically possible to boot into 64 bit kernel mode but it is not recommended by Apple.
It is possible to get a 64 bit EFI update to solve it?
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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You seem to have a triple boot system that was done using the 10.6 installer disk and a copy of rEFIt.
I know because I had the same thing once.
I can tell you what will happen if you decide to upgrade 10.7 or 10.8
1: The EFI and GUID is going to change, rEFIt hasn't been updated in ages since 10.7 started rolling out back in about June 2011. There will be adverse effects with rEFIt so I hear.
2: The 10.8 upgrader is going to barf at your triple boot system, it will upgrade the 10.6 partition but warn you that the 10.8 RecoveryHD partition (10.7 and 10.8 both install) that it normally installs at the very bottom of the drive will not be installed and you can't enable Filevault.
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http://www.maciverse.com/install-os-x-snow-leopard-from-usb-flash-drive.html
So with 10.7+ you'll have to use something like Carbon Copy Cloner for the OS X partition.
So since rEFIt is going to be hosed, so will your ability to use the EFI based program to boot into the three operating systems at boot time.
I assume you found this out and why you want to dump Windows on a external drive. However Apple's EFI doesn't recognize Linux as a boot option.
There is a rEFIt fork that will allow Linux to boot on a Mac: http://www.rodsbooks.com/ubuntu-efi/index.html
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Also, the Library>Preferences folder does even not contain a file called "com.apple.boot.plist," which some owners have reported editing to force 64-bit booting.
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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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To determine if your Mac has 32-bit or 64-bit firmware, copy/paste the following command into Terminal:
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...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.
If you google this issue you can find a hack to rewrite the boot firmware and allow the mini to boot into 64-bit mode. It can be dangerous to your mini if you make a mistake!
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http://www.osxbook.com/blog/2009/08/31/is-your-machine-good-enough-for-snow-leop ard-k64/
Dah•veed

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vintherine wrote:
the.ridikulus.rat wrote:
@vintherine: Everything you mentioned in the 1st post is correct. In your case the correct commands should be:
grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=arch_grub --recheck
grub-mkconfig -o /boot/grub/grub.cfg
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EDIT: Can you try (note the extra line : "set gfxpayload=keep")
It's time for diner (i'm in France). I'll see this in the next hour.
Many thanks
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Try this. Copy the files from Windows's C:\Windows\Boot\EFI to <EFISYS>/EFI/Microsoft/Boot/ . Overwrite any exisitng files, and make sure <EFISYS>/EFI/Microsoft/Boot/BCD file exists. That is the Windows equivalent of grub.cfg (although BCD cannot be read easily since it is not a text file). Try your menuentry again.
Last edited by the.ridikulus.rat (2013-09-27 18:29:09)

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US5, 307, 459, US5, 434, 872, US5, 732, 094, US6, 570, 884, US6, 115, 776 and US6, 327, 625
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I'll see if another member of the team can jump in here and offer more help...
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Hardware Overview:
Model Name:          MacBook
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
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Serial Number (system):          ***************
Hardware UUID:          CA090417-06DE-52F7-8BAB-C0CA928EF8DE
Sudden Motion Sensor:
State:          Enabled
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Kernel Version:          Darwin 11.3.0
Boot Volume:          Macintosh HD
Boot Mode:          Normal
Computer Name:          *********** MacBook
User Name:          ***************************
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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.
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Mac Pro not able to boot into 64 bit kernel?

Hello,
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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.
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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.
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EFI update tu support booting into 64 bit OS

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