I for the pass couple of weeks have been trying to get BT5R1 and UBCD4Win to dual boot off of a USB. People say that for BT4 you could just copy and paste the files but in BT5 the files are in different places. Also I don't know much about how to use syslinux and grub4dos.
I have tried Xboot, YUMI but all fail to let me use UBCD4Win (It gives me a STOP 7B error when UBCD4Win loads).
I am in the process of trying to use UBUSB but i don't think it will work.
Do you need any more info?