Converting a FAT or FAT32 Volume to NTFS
NOTE : Although the possibility of corruption or data loss during the conversion is minimal, it is recommended that you perform a backup of the data on the volume that you want to convert before you start the conversion.
To convert an existing FAT or FAT32 volume to NTFS, follow these steps:
Click Start , point to All Programs , point to Accessories , and then click Command Prompt .
At the command prompt, type the following, where drive letter is the drive that you want to convert:
convert drive letter : /fs:ntfs
For example, type the following command to convert drive E to NTFS:
convert e : /fs:ntfs
When the following message is displayed in the command prompt window, type the volume label of the drive that you are converting, and then press ENTER:
The type of the file system is FAT.
Enter the current volume label for drive drive letter :
When the conversion to NTFS is complete, the following line is displayed in the command prompt window:
Quit the command prompt.
I know a number of people who have done the conversion succesfuly with no loss of data,so I suggest you back up what you can't afford to lose,and then go for it.Hope this helps.