I've got a USB stick loaded with a live installation of Ubuntu for testing purposes. When I want to use it, I generally reboot to boot into the live USB installation.
I'd like to know what the best way to run the live system from the USB without having to reboot is. I think the default USB creator app uses QEMU to run the system, but I'm sure there are also other virtual machine options to do this (Virtualbox, KVM...?).