[Null]

if you had multiple hard drives, or seperate partitions.

only the main/windows drive/partition needs to be reformated and installed on.


like for example, i have 2 hard drives. then split into a couple 40gig partitions, and a couple 80 gig partitions.
everything i want to keep i install on a seperate partition, everything thats REALLY importartant i install on one of the partitions on the 2nd drive.
If something goes wrong with windows and i have to reformat, i loose only windows because all my stuff is saved on one of the other partitions or drives. so that stuff will stay.