Thanks, Christian. I've tried almost every way possible to boot from the UCS iso and this PC just won't do it. I've even tried installing in a virtual machine and then cloning its drive to the PC. I may indeed have to run it from a VM for now and move it when I find a mini PC that will work with UCS.
I actually haven't tried the 4.2 release that just came out today, so I'll give it a try and if that doesn't work, I'll try installing Debian and building UCS on it.