brent Old hat now! about 3 hours and I'm dialed.
Good for you! No idea about the offer of GRUB or UEFI when you start up. When I start my computers, I never see anything like that. Perhaps someone more experienced with GRUB could advise you. My suggestion would be to get rid of GRUB, but I have no idea how to do that.
Glad it's going well for you!