If you have the OpenCore 0.6.8 EFI from this thread, you're 90% of the way there.
- Just create a USB install disk with Catalina. Follow the relevant sections of this post.
- Copy the EFI folder to the EFI partition of the USB flash disk.
- Boot from the USB flash disk.
Thank you kindly for your reply, and pardon me for replying late.
I have discovered I have some kind of hardware failure / or conflicting accessories, etc. Actually, I believe I have several things wrong. This is why no matter what I try, somewhere along each attempt, there is a failure of some kind.
It got so bad that Apps began to become corrupted and failed on launch, Apps I knew were fine and I had used even recently. Entire SSDs began failing. Even back in Windows, right-clicking on drives/partitions in Disk Manager to see Properties was unresponsive, as if you had not right-clicked. This seemed to clear up (and MAY HAVE been from corruped BIOS profiles, as I often save and reload them), AFTER I completely cleared and manually entered my BIOS config. And things just continued to deteriorate.
The final straw was in BIOS, if you were in Easy Mode, you could see the little spinning fans were hesitating every second. Actually, the entire system was doing that. Moving the mouse or "arrowing" through BIOS selections exhibited the same hesitation. I rest CMOS, Loaded Optimized defaults, even Q-Flashed, several times, nothing resolved it. I finally disconnected all cables accept keyboard and mouse... the issue was gone!!!! WTGF?!!!!!!
So tech hell DOES exist, I know, because I've been sent here, where I'm writing this from.
So likely few, to no posts from me until I figure this mess out. Got my machine in pieces and working with both of my Z390 boards to test all of my components and accessories. Will report back once I am absolutely SURE what all the issues are.
Thank you
@CaseySJ for your patience with me, and all of your help. I have been working on all of this non-stop since your previous post to me. I wish I could say I was having fun, but... it's hell, so...