OK so here is what I wanna do. I have an External USB powered HD. I want to partition it into 3 partitions. One for data, another for an os x install and another for an xp install. I want to boot from the hard drive when i want to run windows xp on my intel mac, as well as be able to boot to the os x install should my internal os x die or something. Is this possible? Any step by step instructions would be greatly appreciated. Thanks for any help.