LiveUSB How-To

"The information in this article is specific to Ultima Linux 8.4, and may not be valid for other versions.

Starting with Ultima Linux 8.4, it is possible to create a LiveUSB installation, where the entire Ultima Linux system boots from a USB flash drive (similar to how the LiveCD works). However, LiveUSB creation is still a slightly complex process, hence the need for this page."

http://www.ultimalinux.com/wiki/LiveUSB