Had success installing Big Sur 11.4 on a Asus ROG Strix Z490 Intel 10700K with a Sapphire Nitro RX 6900 XT with graphic acceleration. So good so far.... Feeling good!
Support for Big Navi Mac OS 11.3 maybe......
https://the8-bit.com/macos-big-sur-11-3-radeon-rx-6800-6900-xt-support/?fbclid=IwAR1jWP80DnQnChziLVGoQD2HLYmZPtXzk_x5qv_7YWQwSd5wJKncDKCwiOw
Asus ROG X490-F
CPU 109700K
Sapphire RX 6800 XT
Runs Big Sur well, no graphics aceleration. Have to wait till someone develops a kext or apple drivers.....
Update to the latest BIOS for mother board!
Use the latest open core 0.6.5 follow the guide. https://dortania.github.io/OpenCore-Install-Guide/config.plist/comet-lake.html#misc
Reset the VRAM! Download all the latest Kext Drivers and ACPI files.
Under Device properties add...
Downgrade to OpenCore 0.6.4, as long as it works...... if not it will be a never ever ending updates! FYI the EFI build is only for ROG STRIX Z390-E GAMING..........
It was a pain, this was the best I could do I used Mac ASL to get the DSDT but it refused to be saved, I copied it and saved using text edit in plain format.
The document “System DSDT” could not be saved as “System DSDT”.
The compiler returned one or more errors.
I spoke too soon! The ROG STRIX Z390-E GAMING | i7 9700K Vega 64 runs well. The ROG STRIX Z390-E GAMING | 9 9900K RX 5700XT reboots every 5 mins or so! Errr no sure what dsdt.aml is?
Good news your EFI works on Asus Rog Strix Z390-E Gaming with 9900K and RX 5700 XT like a charm! Let me test it out for a few days and will update! Thanks.
Build an Intel 10 Gen Build 109700K Asus ROG Strix Z490-F Gaming with 16 Gig Rampage 3200 RAM two M.2 XPG 8200 Pro 1T drives Corsair 850w PSU CoolerMaster ML2 240 v2 and a Asrock Vega VII, a fenvi FV T919 (Wifi and Blutooth).
Installed open core 0.5.9 with Mac OS 10.15.6 ever thing works...
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