Sorry if it sounded like I was giving up, quite the opposite.
I am here for what ever you want to try. I appreciate all of it!
No chance I would have got here without your help or it would have took a really long time.
I was just thinking it could possibly move into branches of options that we work on, so I probably need to start a fresh partition that would Just remain on the last best setup we where able to achieve as a branch point for future attempts if needed. I got plenty of space and can cover a few installs to work with if it makes sense to go that way. That Toshiba drive is the old OEM drive that came with the Mac Mini, its a little slow but can use for optional builds if needed, I was not even using it prior to this system build and there is still space on the SSD for another partition or two. Then can put the most complete branches on the NVMe internal Sabrent partitions, I haven't even put anything on that yet.
For the record,
thank you for all the time you put to getting this working.
You had me at booting into my existing install from my old computers install of OSX I been using on the old box where i was stuck at 16GB ram.
--Already at 90-95% functional on brand new machine! exciting to me that it is even possible to get to this point let alone pushing to a 98-100%.
--I'm here for the long hall , I need to see that post from you on the latest EFI with x570 xtreme added to the fully function list.
I was thinking about getting the Thunderbolt Gigabyte add on card, this motherboard has the connector for it.
So really no rush and when ever you have ideas to try I am here for it.
I'm going to continue to research and try to figure out it,
--Still in the minority with the onboard 10Gbe port and I upgraded my hub before I got this box to support 10Gb networking,
-- I will likely be the first to figure it out if i can.
So
no reason to stop really before we crack that 100%