Trying to install, following the guide, reading everything multiple times and following all recommendations, I would always get to a lines stating:
[ PCI Configuration Begin ]
IOPCIConfigurator::configure kIOPCIEnumerationWaitTime is 900
After a minute or so, it would transition to the prohibited image and stay there. The solution I found was to not only have Resizable BAR enabled and DVMT Pre-Allocate set to 64MB, but also set Aperture Size set to less than 256MB. I believe the lowest this motherboard allows is 128MB (I'll check on next reboot and edit if needed). Only with this value could I make any progress past this stage. I was no able to make it to the installer screen.
Include possible fixes:
This might be a quirk with Z390 boards (maybe more), but at least for the Coffee Lake guide, perhaps adding a note to set both DVMT Pre-Allocate to 64MB and Aperture Size to less than 256MB in the BIOS would be beneficial. If not there, then perhaps to the troubleshooting section of the guide?
Install Guide (Coffee Lake) - https://dortania.github.io/OpenCore-Install-Guide/config.plist/coffee-lake.html#deviceproperties
Trying to install, following the guide, reading everything multiple times and following all recommendations, I would always get to a lines stating:
[ PCI Configuration Begin ] IOPCIConfigurator::configure kIOPCIEnumerationWaitTime is 900
After a minute or so, it would transition to the prohibited image and stay there. The solution I found was to not only have Resizable BAR enabled and DVMT Pre-Allocate set to 64MB, but also set Aperture Size set to less than 256MB. I believe the lowest this motherboard allows is 128MB (I'll check on next reboot and edit if needed). Only with this value could I make any progress past this stage. I was no able to make it to the installer screen.
This might be a quirk with Z390 boards (maybe more), but at least for the Coffee Lake guide, perhaps adding a note to set both DVMT Pre-Allocate to 64MB and Aperture Size to less than 256MB in the BIOS would be beneficial. If not there, then perhaps to the troubleshooting section of the guide?