Sorry but don't listen to gixer. Using Evox bios in an X3 is a waste, imho. Of course X3 bios supports large drives (I got 250gb right now). You need to configure it in your X3 config live. Go to Disk tools->Click here to setup LBA48 options->choose F gets all option . Alternatively, go X3 config live->customize x3 bios->LBA 48 mode->change to F gets all. There you go.