bluenote56 Posted January 7, 2015 Share Posted January 7, 2015 Hi I’m posting this hoping it can be useful for the owners of a GA Z68X UD3 HB3 motherboard. I’ve been trying to install Yosemite on this system for a long time without success since I always got stuck on the usual PCI configuration begin etc.. I was using my Yosemite Chameleon USB that I had prepared following the guide by chris1111 here in the forum and that I had already used with success on my GA Z77X UP4 TH. Well after reading everywhere to search for a solution, I eventually succeeded in installing it still on F12 Bios and without Clover, using old AppleACPIPlatform.kext from 10.9.5 and installing it on my USB Yosemite with Kext Wizard. Then I rebooted again from the USB, chose the new Yosemite HD and as soon as I reached the desktop I installed latest Chameleon boot loader. Then after the usual Apple procedure and always with Kext Wizard, I installed the following Kexts: AppleACPIPlatform.kext (from 10.9.5), NullCPUPowerManagement.kext, RealtekRTL8111.kext, GenericUSBXHCI.kext, AppleHDA.kext and HDAEnabler1.kext for sound (from 10.9.5). With ChameleonWizard I set as in pic 1 and chose MacPro 3,1 definition. Don’t forget to put <key>Kernel</key> <string>/System/Library/Kernels/kernel</string> instead of mach kernel Then with Kext Utility repair all and reboot. It works like a charm. Of course create a new folder on your Yosemite installation USB with all the kexts and utilities to copy/use on your new Yosemite HD. I didn’t change anything in Bios settings from Mavericks. Hope it helps and that I didn't forget anything. Good hack. edit: in case someone needs, I put also my kexts. kexts.zip Extra.zip 1 Link to comment Share on other sites More sharing options...
kvonlinee Posted January 7, 2015 Share Posted January 7, 2015 I think you try to run it with clover and you don't have to use nullcpupowermanagement. Link to comment Share on other sites More sharing options...
bluenote56 Posted January 8, 2015 Author Share Posted January 8, 2015 thanks for your advice. You know, since I'm not used to Clover (never used it in my builds) I tried with Chameleon. It's already great I could get Yosemite installed on this mobo but it doesn't mean I can't try later with Clover after updating to UEFI Bios. Link to comment Share on other sites More sharing options...
kvonlinee Posted January 8, 2015 Share Posted January 8, 2015 I put clover on my X58A-UD3R, work great Link to comment Share on other sites More sharing options...
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