as opposed to using 7Zip on a downloaded iso, extract it to your USB thumb drive,
then run the built-in command to make the drive bootable? Most of the live distros
I've played with have both Linux and Windows scripts for doing this. Works quite
well too. I also tried UnetBootin, and while it did work, it put extras in the MBR that
I didn't need compared to using 7Zip.