Before this thread is closed officially, I'd like to leave a breadcrumb trail here for someone looking for a solution to this issue.
Additionally, I found a way to successfully dual boot MacOS Catalina and Windows 10 with working Intel I211AT drivers - without having to set/reset the Advanced\PCI Subsystem Settings, the "Above 4G memory/Crypto Currency mining" setting [disabled for Win10 / enabled for MacOS].
When you build the installer image for MacOS, using OpenCore, do three things:
- When you get to the section for creating the "config.plist" (OpenCore Guide), make sure you add, "npci=0x2000" to the boot-args string value in the NVRAM section.
- In the MSI BIOS Advanced PCI Subsystem Settings, make sure you set the "Above 4G memory/Crypto Currency mining" option to Disabled.
- Set the UEFI boot selection to the MacOS drive and not the Windows drive (setting the two OSes into separate drives is best practice).
The UEFI boot menu from OpenCore will give you Windows 10 first and the MacOS as the second choices, respectively. You no longer have the non-working Intel chipset in the GPT, UEFI Windows 10 disk and you no longer have to fiddle with BIOS to make the switch between the two OSes.
#Ryzentosh #Hackintosh #x470 #MSI #GamingProCarbon #I211AT #Intel #Windows10 #OpenCore