POST and boot to secondary graphics card?

Hi,

In my primary graphics slot is a Vega & in the other 16x slot is a little Nvidia. The Vega is intended for a virtual machine & VGA passthrough only, so is not the primary card.

On a previous motherboard, there was an option to select primary graphics card, this really helped with the above, but I cannot find this option on this board. Is it a possibilty?

I am running the latest 9960 BIOS.

Moving the cards is not an option, as this is all part of a hard tubed watercooling loop.

Cheers,