[Ben A.]

Update: it turns out there's something up with the Classmate, not the flashdrive. I took the files from the flash drive and put them on a DVD and tried to boot a different computer from it; it worked. Then, just for laughs, I tried booting that computer from the USB drive. It turns out that the USB drive also works, the Classmate just doesn't want to boot from it.

BIOS issue? I don't have the Classmate with my ATM, so I'm just letting everyone know in case anyone else is having the same issue... I'll update after I take a look at the BIOS later today.