Phil V

Working fine for me under 6.8.0. I can't comment on your other issues.

I updated from 10.15.1 to 10.15.2 without any issue via About This Mac => Software Update. I did have to change my network interface from e1000-82545em to vxnet3 for the duration of upgrade. Then back again afterwards to get all my iCloud and App Store connections working.

I was mounting the wrong EFI partition which explains why Clover wouldn't create the folder structure. A little embarrassing. So.... we're up and running! The fix was actually the opposite of what you suggested and to put everything in 10.15 which was empty. Just the RX570 working though. No luck with the Navi GPU, however that's not a huge concern. Thanks for your suggestions

Right, so I grabbed Clover Configurator and ran it. As I didn't have much of a clue what to do with it I re-watched SpaceInvaderOnes "Complete Guide to Installing MacOS Mojave or High Sierra on Unraid as a VM" Mounted the EFI partition as described in the Video Clicked into the Kexts Installer section. I had to manually create the /EFI/CLOVER/kexts/10.15/ folder in Finder as CC seemed incapable of doing this. Then installed Lilu and WhateverGreen. Shutdown everything and rebooted the entire system. Still exactly the same problem - both GPU's fail to proceed past the Apple logo boot screen. Am I doing this wrong? I wouldn't be at all surprised. Any suggestions would be appreciated

Thanks for your reply. Do you mind being a bit more specific about how to go about doing this? i.e. is this done through the VM boot options? Or do I need to install Clover Configurator and do it there?

I've seen somebody else post earlier about black screens with AMD cards, however I can't see anywhere where he posted how he resolved the issue. I have the same issue with a Catalina VM which runs fine through VNC. Passing through a USB controller and NVMe drive works fine. However, when passing through GPU's: 1) AMD Radeon RX570, the boot screen shows up fine, then the Apple logo with progress bar. When it's about to switch to the login screen, well... the screen just goes black. The weird thing is when this happens, the fan on the GPU powers down too. 2) AMD Radeon RX5700 XT is very similar, however instead of going black the screen just seems to freeze just as you'd expect to see the login screen, i.e. still on the Apple logo with progress bar almost complete. In both (the non-VNC) scenarios one CPU core seems to just sit on 100% until I force quit the VM. If it's relevant, I'm not trying to pass through sound from either GPU. Both cards work perfectly fine with my Windows 10 VM. And the RX570 used to work fine with my old Mojave VM using SpaceInvaderOnes old Mojave installation guide. Has anybody got any suggestions? I'll post XML's if requested.