Posted 12 November 2012 - 11:25 AM
It's a step-by step guide for installing mountain lion on an older model Mac Pro. What's strange is he's using Chameleon, complete with an smbios, boot.plist, etc... Which basically turns it into a semi-hackintosh. I was under the impression that installing Chameleon on a real mac would make it non-bootable. How does this work? Is it the fact that he's using --legacy when blessing the partition?
This is strictly out of curiosity as my Macbook Pro is 100% Mountain Lion compatible and I have absolutely no reason to do it.
- ionpeliman likes this
Posted 12 November 2012 - 12:19 PM
Posted 12 November 2012 - 12:46 PM
I remember chameleon teams has ever announced that chameleon should NOT be installed on real macs. It's still a little bit curious how does the owner made it.
Old mac pro doesn't have 64-bit EFI required by ML to boot so Chamaleon is used to emulate that. Second, he' s using smbios.plist to change the platform-id to fool the ML installer, that would refuse to install the OS on Mac Pro 1,1.
Posted 12 November 2012 - 02:14 PM
Posted 12 November 2012 - 02:27 PM
Basically, no, installing chameleon will not make the machine unbootable *if you do it correctly*, it may however make graphics not work.
Posted 12 November 2012 - 02:28 PM
Posted 12 November 2012 - 11:41 PM
Native Mac EFI 32 boot > BIOS emulation mode > Cahmeleon EFI 64 emulation mode > OS boots up.
Bit complicated, but seems (in a way) similar to booting on non UEFI BIOS PCs, via Tianocore EFI. This is used to install and run Windows 7 64bit from GPT disk on PCs without UEFI (with just plane old BIOS).
Posted 13 November 2012 - 10:38 AM
Posted 19 February 2013 - 07:32 PM
Posted 19 February 2013 - 08:29 PM
Posted 22 February 2013 - 04:55 AM
Probably, but the question is then, what could you possibly want to inject?
btw (to reiterate what the round one said) the MacPro1,1 has 32-bit EFI firmware, and therefore cannot run Mountain Lion.
You can get around this Apple-imposed limitation by installing Chameleon on it.
- theconnactic likes this
Posted 22 February 2013 - 05:30 AM
However, it just came to my mind as i'm writing this post: what about PC parts? Would they necessarily have be flashed with an EFI-compatible ROM to run properly or at all, or couldn't they just be dsdt-injected as is?
Posted 23 February 2013 - 04:37 AM
Posted 09 October 2014 - 04:09 PM
You don't need to flash pc cards (GPU) if you use chameleon, once chameleon boots in a mac pro, it does precisely the same thing to enable your gpu and boot screen, since it uses bios to initialize the gpu. Therefore if you used BIOS only gpu on native efi boot, voila, no boot screen.
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