Ok, reading this post, i can see its possible to run Windows from an external drive...
It said:
My doubt is the following: I only want to run XP from my external drive, but i dont want to dedicate the entire external drive for it...is it possible to create a windows partition in my external drive (set it to like 20gb), and leave the rest of the external drive for my mac?
It said:
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Once you install the firmware upgrade which allows for BIOS, then boot from the Windows CD (hold C during startup) and follow the regular Windows setup procedure while selecting your external drive partition to install Windows on to.
After installation, according to http://docs.info.apple.com/article.html?artnum=75459 "Press Option-Command-Shift-Delete during startup to Bypass primary startup volume and seek a different startup volume (such as a CD or external disk)". At this point, you'll be able to select your external drive to boot from. Since Windows will be installed there, you'll boot Windows. "
My doubt is the following: I only want to run XP from my external drive, but i dont want to dedicate the entire external drive for it...is it possible to create a windows partition in my external drive (set it to like 20gb), and leave the rest of the external drive for my mac?