Mark Phelps said:
Just so you know, I have one of those USB-to-VGA adapters to add another display on my desktop, and the adapter is not seen during the boot process. It only appears after Windows has started and has loaded the "display link" (that's what they call themselves) drivers.

So, I doubt you could use it as a primary monitor.
Thanks Mark, I should have known it is time to retire my old friend.