On Oct 3, 2008, at 11:45 AM, Zane H. Healy wrote: > Is it possible to install Mac OS X on an external Firewire HD such > that you > can boot either a PPC or an Intel-based Mac? I want to build a new > utility > disk that I can use to boot any of my families Mac's and run various > utilities against them. Check out MicroMat Protogo for making your own universal bootable device and adding your favorite utilities: <http://www.micromat.com/index.php?option=com_content&task=view&id=184&Itemid=105 >