Converting to NTFS

Yes you can.
but first, be aware of the following:
1. It can not be reversed back to FAT once it is done.
2. It could take a long time and the partition will be inaccessible until finished with the conversion.( so do it during "off hours")
3. make sure the partition has enough free space. if you have over 140 MB of free space on the partition you should be o.k.
4. If the partition is your boot partition, you can't convert it while the system is running.(also if anything is still running on other types of partitions)the ay around this is after you enter the command (below) you'll get a message saying it can't perform the convert and if you want to schedule a conversion when it restarts. Say yes and restart. When the computer re-boots the conversion will begin, the system may restart a few times so don't panic. when its done log on. the volume will be NTFS with all files in tact.
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Here is how you do it.
open a DOS prompt and use the CONVERT command
an example would be as follows:
CONVERT C: /FS:NTFS
C: being the drive you want to convert yours may be another drive but I think you get the picture.
3.