in partitioning a HARDDISK what is the minimum size of harddisk if im using WINDOWS xp windows 98 and other OPERATING systemWindows XP is 2GB for a Pentium II computer but I recommend 10GB or more for XP. Windows 98 is 500MB for a basic system back in 1998 but I recommend 2GB or more for 98.How about for Vista?For Vista i wouldn't go any SMALLER than 80G.