USB booting :: Smart Boot Manager

I use Smart Boot Manager to boot a number of OS's installed on my HDD. The USB pendrive shows up in the list, but I get errors when I try to boot to it.

The problem is my bios can be set to BOTT to usb as a Hard Drive first, but if the USB drive isnt installed it reverts to using the HDD (hence Smart boot manager). In otherwords, every time I want to boot to DSL, I have to go into the bios and change the settings.

Is anyone else using Smart Boot Manager, and if so have you figured out a way to boot DSL?

original here.