Hi! > Would that work if I have a second graphics card ?
To be honest, I am pessimistic. I once tried to use the real graphics card of a commercial VMWare server workstation for GPU calculations by making it visible to the OS inside the virtual computer and just got the ability to crash the real hardware :-p I actually had more luck to tune a DJGPP app into using 2 PCI or AGP graphics cards simultaneously by PCI bus config tricks. > If the Mac Pro 5,1 would let you boot from USB, > this wouldn’t be an issue. Or from CD or DVD, but I guess the Mac firmware has never introduced PC compatible BIOS since they went for PC compatible CPU? So, as said, you would have to first load a CSM BIOS layer and I have no idea whether that ever has been done successfully yet? Given that Mac are a lot more expensive than PC anyway, you could maybe just acquire any simple new or 2nd hand PC with the right slot (PCIe?) for the graphics card, plug it there, boot DOS from CD or USB, update your graphics BIOS, put the graphics card back in the PC... Few 100 USD should be plenty. Or of course ask any friend or shop whether they let you use their PC for the task, which should take at most a few hours to figure out and then just a few minutes to do? Regards, Eric PS: It surprises me that you have no Mac version of the VGA BIOS update installer tool available. Maybe you just need the right Mac terminology to find whatever Apple calls the DOS tool you have? _______________________________________________ Freedos-user mailing list Freedos-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/freedos-user