I recently switched from Clover to OC.64 to get 11.1 compatibility. I used the OC64 config setup in the first post, and it worked great.
I have learned I can no longer boot into Windows - it's no longer a boot option on the (now OC) bootup screen, and when I select the Windows startup disk in Startup Disk sys prefs, it just boots me to the same picklist of (MacOS-centric) choices.
It doesn't even show up in the BIOS picklist of partitions/disks/etc. to boot from.
I do see my Windows disk in MacOS, and it does look normal - partitioned, has lots of stuff on it, etc.
Does the crowd have any thoughts on how to get Windows 10 working again after a flip from C. to OC ?