on my hard disk i have 4 partitions....c ,d,e,f and on c i had had win 2k and on d i have xp. there was a virus in c drive, so i had to just kill everything from explorer in c, except a few folders which it refused to delete(this folder is not empty) now i want to format it, i ran the format from windows xp it said it could not do it, and when i tried it from cmd it says i need to dismount it first.....what does this mean, will it affect my win xp on the same physical disc, but different drive and partition?