Hi. I apologize if I'm posting in the wrong place.... I have the Gigabyte GA-Z87X-UD7-TH board, and I used the Clover install method posted by Tonymac, to install 10.9.2. I am currently connected with a mac 24" monitor via the thunderbolt (display) port, and that seems to work fine, and so does the HDMI out with my other monitor (although I only have one plugged in at a time.)
My issue is that no matter what I do, if I boot into Windows 8, 64bit, or if I boot into Mac, I CAN NOT get the mobo to recognize either one, or two 5870 graphics cards. I currently have two installed, with the crossfire connector connected to both of the graphics cards, they have power (I have a 1000 Watt supply), the fans are spinning, the PCIE dip switches on the board are all in ON position (I have no other cards installed, except the wireless / bluetooth card that came with the board.) Is there some magic or bios setting that needs to be changed to get the board to recognize that I have graphics cards installed????
In Windows I try to install the ATI drivers from the ATI site, and it just gives me an error, and won't install. In device manager, there is no ATI cards showing (the only display adapter Windows sees is the Intel 4600) and there is no exclamation point on anything. I have all drivers installed and I have all updates installed. For the most part, everything is perfect, except I can not get the board to recognize the cards. Am I missing something? (Yes, I tried with just one card, and I got the same result. I know they both work fine because in my previous build I had them both installed and was running my unibeast hackintosh.) but nothing I do seems to get the board to recognize any graphics cards... Any ideas? Thank you for your time and help. If this is the wrong place to post, I apologize, I will be glad to move if necessary.... (I wanted to also add: whenever I plug in any monitor in the HDMI port, on the motherboard, the fans seem to jump up to full speed... It gets quite loud. but when I unplug the HDMI, or when I plug into the HDMI on the ATI cards, the fans go way down... ?)