Currently running 19.7 and decided it is time to move forward. Created a USB boot device and attempted the install. The USB device boot up to the menu but then when I continue and the kernel starts to boot in hangs. I get the blue "booting" message and then it hangs every time.
My hardware is a QOTOM Q190G4-S02 with a Intel J1900 processor.
Chances are it is booting just not in the console mode you want / can see.
When the Opnsense logo comes up.. press 3 for boot loader options..
then type
set kern.vty="vt"
boot
and see if it helps. You should only need to do this once.
Didn't work for me. May need to move back to untangle.