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iM 4,1-14,4 2011 iMac Graphics Card Upgrade

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I've tried different options. At this working stage, I stopped...like this. I will add a line to OpenCore: Pciroot(0x0)/Pci(0x1,0x0)/Pci(0x0,0x0) -> @0,APPL boot-display = 1 , then Mac OS 10.13.6 turns on the display! Other systems also include a display. It's convenient. miniDP, agpdmod, hardware mod and a second display are not required.
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