zhangtemplar Posted October 22, 2014 Share Posted October 22, 2014 Hi, guys, help is needed. I am trying to install Yosemite (14a389) to my HP z800 workstation, which has two Intel Xeon E5520 CPU and 96 GB ram. However, I am stuck at this screen and followed by a black screen (the screen is totally off). To install it, I have installed only one SSD (tried on both SATA and SAS port, which is recognized by bios) and Nvidia GTX 760. For install, I used the latest chamelon (on a USB thumb drive) for boot and another SSD for install file disk. Boot arguments: 1. -v -f kext-dev-mode=1 2. -v -f kext-dev-mode=1 npci=0x2000 The hardware specs: Chipset Intel 5520 2x Intel Xeon E5520, 2.26 GHz, 8 MB cache, 1066 MHz Memory, 5.86 GT/s QPI, 80W 96 GB (12x8 GB) DDR3-1333 ECC Registered RAM 2-CPU Nvidia GTX 760 Thanks! Link to comment Share on other sites More sharing options...
zhangtemplar Posted October 24, 2014 Author Share Posted October 24, 2014 Why no replies? Help please! Link to comment Share on other sites More sharing options...
letbeaman Posted October 25, 2014 Share Posted October 25, 2014 If you use the [url="http://www.insanelymac.com/forum/topic/279450-why-insanelymac-does-not-support-tonymacx86/"]#####[/url] method, then you'll be able to boot into the installer Only issue is that it won't recognise any of your drives... the AHCI drivers aren't present I managed to install Yosemite on an external USB HDD, but it was slow as hell... not even usable enough to run [url="http://www.insanelymac.com/forum/topic/279450-why-insanelymac-does-not-support-tonymacx86/"]#####[/url] to attempt to fix the AHCI driver issue :-/ I guess you could try to put them in Extra on the [url="http://www.insanelymac.com/forum/topic/279450-why-insanelymac-does-not-support-tonymacx86/"]#####[/url] stick 1 Link to comment Share on other sites More sharing options...
Pimentel Posted October 25, 2014 Share Posted October 25, 2014 Hello Try use olarila's image... It's 100$ retail, enter in olarila forum: http://olarila.com/forum/ Go to Download sector and looking Yosemite usb bootable Donwload make your usb bootable and try install. Why no replies? Help please! Just calm! As soon as possible we gonna help you Link to comment Share on other sites More sharing options...
jejes Posted November 15, 2014 Share Posted November 15, 2014 I have installed on 10.9.5 but i haven't tried with 10.10. But in 10.9.5 you have to make a rollback of kexts to get HD working. , only i have to rollback to SAS drivers from 10.9.1. Apple has changed in 10.9.2 and it was the problem of "waiting for root device". Update 10.9.1 from Luigi with OSX1094 Combo Update then delete /System/Library/AppleHPET.kext and replace the extensions with this provided by me (It's from 10.9.1). https://dl.dropboxusercontent.com/u/1206172/Extensiones_LSI_1091.zip 1 Link to comment Share on other sites More sharing options...
kvonlinee Posted November 20, 2014 Share Posted November 20, 2014 Try to boot with -v kext-dev-mode=1 GraphicsEnabler= No If still see black screen add more PciRoot=1 Good luck Link to comment Share on other sites More sharing options...
elexir Posted December 11, 2014 Share Posted December 11, 2014 hi i have same computer (z800 2xXeon x5650 12 Gb nVidia GTX760) to solve you problem you need use clover boot loader r3050 in folder /clover/EFI/CLOVER/kext/10.10 copy FakeSMC.kext & NullCPUPowerManagement.kext (by tonymacosx86) LegacyIntelACPI.kext link to SAS kext http://www.insanelymac.com/forum/topic/285197-driver-for-lsi-megaraid-sas-family/ in clover options don't use "NewWay" & "Patch Darwin" - this causes panic others have virtually practically no effect start flag -v -x npci=2000 but i have problem normal work graphics nvidia in safe mode system start if you know how to fix nvidia it write a PM if I find something I'll let you know how you run setup ? without acpi kext ? in clover problem in acpi, without legacy don't detect hdd or ssd good luck 2 Link to comment Share on other sites More sharing options...
VIP-death Posted January 15, 2015 Share Posted January 15, 2015 elexir: Where can I download LegacyIntelACPI.kext??I have z820 and I get kernel panic when I run setup Yosemite. Link to comment Share on other sites More sharing options...
kvonlinee Posted January 15, 2015 Share Posted January 15, 2015 This is for LegacyAppleIntelAHCI.kext http://www.insanelymac.com/forum/topic/303795-ide-dvd-drive-problem/?p=2101707 1 Link to comment Share on other sites More sharing options...
VIP-death Posted January 16, 2015 Share Posted January 16, 2015 I need LegacyIntelACPI.kext not LegacyAppleIntelAHCI.kext Link to comment Share on other sites More sharing options...
zhangtemplar Posted March 5, 2015 Author Share Posted March 5, 2015 Thanks, guys. I will try your methods. Thanks, guys. I will try your methods. Link to comment Share on other sites More sharing options...
zhangtemplar Posted April 1, 2015 Author Share Posted April 1, 2015 Hi, guys, Thanks for your help. I finally got 10.9.1 runs on my HP z800 and everything runs very well. I use boot flag "GraphicsEnabler=no PCIRootUID=0 -v -f". It seems that, I need to use 10.9.1 and nothing later than it will work. Perhaps I need to roll back some kexts. The detailed step is described in http://167.88.47.13/?p=261 Link to comment Share on other sites More sharing options...
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