If you want to convert FAT32 to NTFS , you can do and your data won't lose
1. Go to RUN dialog box and type cmd .
http://www.sb-innovation.de/attachme...achmentid=3097
2. Type convert drive: /fs:ntfs
http://www.sb-innovation.de/attachme...achmentid=3098
3. Reboot your computer .
I'm not sure in Vista , but you can in XP