Is it possible to boot retail ISO's with BIOS mod?

[segadreamcaster]

Hi all,

I have recently flashed my DC bios to the Dreamshell "boot loader with bios", which loads up fine and loads up the full dreamshell from the SD card. I then go to launch a game (quake III in this case) and it just resets back to the loader.

I can load and run the game ok from the SD card when I boot up with the dreamshell CD but not from the bios...any clues as to why?

I know this was a problem in the past but I though this problem was fixed in RC1?

Thanks for any help

Cheers