Hi I have 80 gb harddisk and 5 o.s's. 1)windows98 2)windows2000 Pro 3)windowsXP 4)windows2003 server(Enterprise edition) 5)Red Hat Linux 9 My problem over here is that when ever something goes wrong with win98(which i used mostly).And i have to format and re-install win98 The whole system is messed and i have to re-install all of them. Is there any way of installing different o.s's such that they are independent of each other.I mean even if you format any of one of them the other should work. My primary partition is C: and others are extended d: etc.. and win98 is on cfat 32) other versions of windows are in NTFS format and rhlinux in ext3 format. i do hope some guys here could help me. thanks in advance.