Topics Covered: --Installation steps for the motherboard, including patching the BIOS --Installing on top of an existing Windows installation without formatting. --Getting the Killer NIC working --Getting the App store working with NullEthernet Exact configuration: i7 4770k Asrock Fatality Z87 8GB (2x4GB) Corsair Dominator PNY GeForce 660 Ti After a couple nights, I have everything working! I'm going to show all the steps I followed to get a fully functional OSX Mavericks on the Asrock Fatal1ty Z87 Killer. This is just as much for me in case I need to re-do this in the future. 1. Create your bootable flash drive using UniBeast. http://www.tonymacx86.com/downloads OPTIONAL: If you have a Windows installation already and want to install OSX on a separate partition on the same HDD, you'll need to patch the boot disk with files found here. They do work on Mavericks: http://www.osx86.net/files/file/1129-osinstallmbrosinstallmpkg-108x/ 1.1 Download the Killer NIC kext here: http://www.tonymacx86.com/network/120084-working-kext-killer-e2200.html All you need from this zip file is the kext in the Debug folder. The other one DOES NOT work, and the one included in Multibeast didn't work for me. 1.2 Get a kext installer. I used Kext Wizard. You will need these things as you will not have internet access. 2. Patch the BIOS. This is mandatory. If you do not perform this step, the PC will reboot over and over and you'll never make it to the installer. This step assumes you're using Windows. I performed these steps in Windows 8.1 64bit. They should be the same in Windows 7 64 bit. WARNING: It should go without saying, but I'll say it anyway: Patching your BIOS is dangerous. Follow these steps exactly to avoid problems. You shouldn't have any problems, but it's a risk. 2.1 Download afuwin and PMPatch http://www.ami.com/support/downloads/amiflash.zip http://www.tonymacx86.com/ssdt/92024-pmpatch-uefi-patching-utility.html 2.2 Extract the amiflash.zip file and navigate to Aptio/afuwin/64/. In this directory, extract afuwin64.zip. For convenience, extract PMPatch in the same directory as afuwin64. 2.3 Open an elevated command prompt and navigate to the directory you have extracted afuwin to. The complete directory should be Aptio/afuwin/64/AfuWin64 2.4 Extract the BIOS of the motherboard using the following command: afuwinx64 bios.bin /o 2.4.1 Patch the BIOS with the following command: pmpatch bios.bin biospatched.bin 2.4.2 Apply the patched BIOS: afuwinx64 biospatched.bin /gan ( Credit goes to this thread:http://www.tonymacx86.com/mavericks-desktop-guides/116155-success-asrock-z87-extreme6.html ) 3. At this point, you should have a fully working boot disk and a patched BIOS to avoid constant reboots. If you're having issues getting to the installation screen, you should consider using the onboard video. Other than that, you (Hopefully) shouldn't have any issues. 4. Assuming you followed the instructions, you should have Multibeast available. Run Multibeast. I did not use a DSDT, and everything seems to work okay, including sleep. I just ran EasyBeast, but also include the driver for Realtek ALC1150 (Without DSDT). NOTE: Check the update in the second post about audio. 5. Install the Killer NIC driver you downloaded in step 1 using Kext Wizard. In addition, place the ALXEthernet.kext into IONetworkingFamily.kext/Contents/Plugins. Rebuild permissions. Go to System Preferences > Network and remove all network interfaces by using the minus sign. Reboot the machine, go back to System Preferences > Network, and add a new ethernet adapter. The networking should work at this point. If it does not, MAKE SURE you are using kext found in the debug directory of the downloaded file. You should also double check the info.plist of the ALXEthernet.kext file and make sure there is an entry like this: Code: <key>IOPCIMatch</key> <string>0xE0911969</string> 6. If everything works, you're good to go! Except one last thing... The App Store doesn't work. The App Store doesn't like the Killer NIC, so get NullEthernet from here: https://bitbucket.org/RehabMan/os-x-null-ethernet/downloads We're going to need to edit the NullEthernetInjector kext to match the Killer NIC. Navigate the kext and open the info.plist file with a text editor. You should put this information in the plist: Code: <key>IOPCIMatch</key> <string>0xE0911969</string> <key>MAC-address</key> <data> YourMacAddress //Find by opening a terminal and using the ifconfig command </data> Use Kext Wizard one more time. Install NullEthernet.kext found in the Release directory, and then install NullEthernetInjector.kext (This is the file you modified with the above information). Fix permissions, remove all network adapters again, and reboot. 7. Create a network adapter again, and you're done! You should be able to use the app store and have full internet access! Possible Omission It may be necessary to navigate to go to /Library/Preferences/SystemConfiguration and delete the networkinterfaces.plist, but I believe that's essentially what we're doing when we delete all the network entries in the Network screen, but I don't know the intricacies of OSX very well. If you're having issues, it may be worth deleting this so the OS can rebuild it. http://support.apple.com/kb/TS3925 ====================== I'm a CS major, but I'm definitely no expert on this stuff. I wanted to use Xcode to develop some iOS apps without having to purchase a Mac. I was as thorough as possible with this. I hope it works for everyone that wants to use this board. If not, I'll be happy to try to help, but please tell me which step you're stuck on and be descriptive on what you've tried, what's not working, and perhaps what you think went wrong. Good luck, and enjoy your OSX install! Time to learn some Objective C!