Hacking USB loader with second drive possible?

[Wiisel]

Ive been playing around with mplayer and i plugged a fat pendrive in without unplugging my external wbfs drive. Mplayer ignores the wbfs drive and mounts the Fat drive but when i load USB loader it cant find wbfs and wants to format the fat drive would it be possible to have it work like Mplayer does and ignor the other drive? I would really prefer to just add an extra external HDD than mess around with partitions on one

Edit:

never mind it just switched them round it seems the usb slot to the left/top (looking at back) takes priority and reverses this effect when the slots are switched
next test with a hub when i find it http://www.nintendo.co.uk/NOE/en_GB/suppor...5251_10177.html