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The Dell OptiMac Big Sur/OpenCore Thread - For 7020/9020 Optiplex Desktops

Tried using his latest. No change. Who knows. Thank you again though.
You're welcome. 4K/60 will work with Catalina if it's a must have for you. Some have reported that 4K wasn't working at all in the Big Sur Betas. It may still not be fixed yet for Big Sur. I had thought it would have been by now but obviously it isn't. Acidanthera will likely figure out and resolve the problem eventually. Maybe by 11.2 or 11.3.
 
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Same issue !
It would be best to follow the USB for beginners guide to sort this out.

 
It would be best to follow the USB for beginners guide to sort this out.

Thanks i cant find the issue. I think AHCI?

PXL_20210108_165642613.jpg
 
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Is your problem with the initial install or with USB 3.0 ports. Not clear to me.
When i disable USB 3.0 Ports i can go to install screen.
 
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