what is an optimum hard drive for just the os? have a 30gb with tiger installed and apps. all the other folders for media i moved to another hard drive. time pas passed and i have gotten a quite a few apps, x11 developer stuff, and now it leaves only about 9gb. i cleaned it up some using "whatsize.app" but i remember reading somehwere that an os hd runs best at half free space due to virtual memory etc. im thinking about using carbon copy or something to relocate my os disk onto a bigger physical disk. i don't want to go to big because ive heard that can make it run slower. is that true? ...and if i sound confused feel free to correct me. thanx!