I have a dual boot. Ubuntu and Vista Ultimate 32bit.
My USB drivers are being handled by the OS, not the BIOS. I have a USB Keyboard and Mouse. When the dual boot screen comes up the USB drivers aren't loaded so i can't choose what OS i want to boot. If i connect a PS/2 driven Keyboard there is no issues.
How do I load the USB drivers without the OS support. I haven't throughly checked my BIOs to see if there are any options to enable the drivers however i am guessing that it would be enabled by default if it was available.
I slightly remember added mouse support to XP's recovery console at one point in time. I am guessing this process with be similar.