The Xbox is a low-cost (149 USD/EUR) IBM PC compatible computer, which can be used as a server, workstation or as a media player. Though, its with minor hardware differences make it necessary to slightly modify operating systems so that they are compatible with the Xbox.
This document describes these differences in detail and explains how to handle them in your operating system, and explains how to get started http://www.xbox-linux.org/wiki/Porti...the_Xbox_HOWTO