will tht hotplug enabled %while u r booting does ur kernel shows hotplug start...and wait 4 some time
if so connect the usb u can c tht the LED's are flashing and then run command
dmesg
u can c the usb thing most probably teh device will b /dev/sda1
then mount it 2 any folder %better make a folder in /mnt like /mnt/usb
mount /dev/sda1 /mnt/cdrom %just 4 fun, then it wil b mounted to cdrom
sometimes u should b root 4 mounting devices try sometimes tis will help b o luck
