I have a fall 2008 model macbook, 2.4 GHz 4GB ram, etc. I run windows XP SP3 on bootcamp, with a fat32 partition. I believe the external harddrive I run games from is also fat32 formatted. I've had enough problems with transferring files over 4GB that i've decided to attempt to convert from fat32 to ntfs. I'd like to do it while on my windows partition, with the CONVERT C: /FS:NTFS in the command prompt. What precautions should I take before I attempt this? How difficult will it be to also convert my external drive to ntfs? Will anything be deleted in the process? Will I still be able to use parallels?