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[Solved] original mac 8800GT not boot on Sierra

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Jan 13, 2017
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Motherboard
Gigabyte Designare Z390
CPU
i9 9900K
Graphics
RX580
Mac
  1. iMac
  2. Mac Pro
Classic Mac
  1. Apple
Mobile Phone
  1. iOS
Hi I have one old machine with Sierra 10.12.0 Mobo : GA-G33-DS3R / CPU : X5460 / 8GB DDR2-800/ and till now I use nvidia GeForce 8400 GS-512mb and work good, but I need this GPU for other machine because is half- and put my original card from mac pro 3.1. On card is write 9800GT but system are recognize like 8800GT.
So after this update I can't boot without nv_disable=1 and wen is boot with flag, system is recognize card like nvidia GeForce 8800 GT 512MB, but flag is enable. I make a lot of changes in dsdt fix, and graphics patch,
I have installed nvidia drivers and this not help.
I try to put original NVDAstartup.kext from El Capitan and this not fix problem.
Can you help to fix problem.
 
I found solution.
I add npci=0x3000 and put back original Sierra NVDAStartup.kext
also delete nvidia drivers.
:)
 
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