lautzki Posted September 18, 2014 Share Posted September 18, 2014 Hello!My same-HDD OS X/Windows dual-boot system is working fine apart from the fact that I need to switch graphics cards every time I boot into the other OS.The problem lies in my AMD Radeon R9 270X graphics card - in order to boot to OS X, I have to have my primary graphics card to be set as onboard in UEFI, because Chimera refuses to cooperate with my AMD card. Due to this, I can't see the actual booting or even Chimera, the display starts to work when I've logged in to OS X. At this stage, I have my DVI-port plugged in the AMD card. This isn't really a problem.Getting into Windows is a little trickier. To do this, I have to switch my DVI-cable to the integrated graphics card. This time I can see the boot-up and Chimera, where I can choose Windows. This isn't really a problem either.The real problem is that Windows doesn't recognize the AMD card and OS X doesn't recognize the integrated graphics (HD 4600), which is really quite opposite from what I want. Essentially I want the AMD card to work with Windows for gaming and HD 4600 would suffice on the OS X. The OS X behaves quite strangely when I boot with onboard graphics plugged in - a message on my screen starts to float around that says "Not recommended mode - optimum mode is 1680x1050".Can you guys give me any heads up on what should I do? Should I just try installing AMD drivers on Windows and some Intel HD graphics fix on OS X? EDIT: Oops, wrong section! Meant to be in post-installation I suppose. Link to comment Share on other sites More sharing options...
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