evidently its from the command prompt
http://www.tech-forums.net/computer/topic/5208.html
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official microsoft article
http://support.microsoft.com/default...b;en-us;307881
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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:
Conversion complete
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JP