Hi, You can convert from Fat32 to NTFS at anytime, but if you do, the cluster size is set ridiculously small (512 bytes I think) which means you have no end of troubles with fragmentaion, etc. This becomes especially accute when compressing your file system... Your best bet is to go NTFS from the start, that way it uses a far more sensible 4K cluster size and doesn't waste space. Both my partitions are NTFS. Oh, and make a manual backup of your registry for safe keeping should things screw-up later. XP has an auto registry roleback feature, but what the Admin manual tells you, (that the OS doesn't) is that if you get too low on space (on your boot disk) it's stops doing these backups. It just doesn't tell you that... later jb