No Valid Install Hard Drive Detected

My Road Hog 4 is currently in 3.8.0 1577
I've been attempting Full ISO installs of 3.9 through 3.12 using a flash drive and the Etcher application.
The console keeps giving me the message No Valid Install Hard Drive Detected.

Things I have tried:
All USB ports several times
Linux Live USB Creator (instead of Etcher)
Several versions, 3.9 , 3.10........ ISO files loaded to a flash drive through balenaEtcher
Cycling Power

The console does still boot and operate so the hard drive seems to be working.
Am I overlooking something simple? I'm out of ideas.