Originally Posted by unclejung
afobisme gave a good example why you would want to partition your hard drive.
Hard drive is usually the worst bottle neck in a system, and a fragmented hard drive can be many times slower than one that isn't. Here is what I do with my 60 GB drive:
20 GB C: partition for XP and applicattions.
05 GB D: partition for data that I generate (I am a programmer)
20 GB E: digital media (music, photos, etc.)
16 GB S: scratch space (download, temporary cd-rom/dvd images, etc.)
This isolate fragmentation. My C: partition where program loads from will not need defragmeted very often because there is not a lot of data added/removed from it. My D: partition which holds the most important data can be back up simply as a whole drive (not having to decide what to back up and what not). I have a large partition for my digital media which tend to take up a lot of space. And finally the most volatile partition S: can be defragged or even formated as needed when things get out of hand.
That is the method to my madness. I think the benefit far outweight the little effort.