I have live ubuntu 12.04 desktop on a usb flash drive. I've gone into my BIOS and changed the boot order so that it runs external drives first. On startup, when the flash is in, it will start to boot it. But, it doesn't do anything but give this message:
SYSLINUX 4.06 EDD 2012-10-23 Copyright (C) 1994-2012 H. Peter Anvin et al_
The underscore just flashes. I don't know what to do from here. I've attempted every key and each key combination I can think of. It doesn't appear to respond to keys at all. The flash drive is formatted in FAT32, by the way.
I used Universal USB Installer to put it on there.