Sometimes you may need to convert an existing volume from FAT32 to NTFS file system, which provides better security, faster performance allows file compression et cetera.

There is a simple command-line tool that exists for such purpose called convert.

In order to convert one of your drives, click Start, then Run and type:

convert volume /fs:ntfs

where "volume" is a drive letter followed by colon, for example:

convert c: /fs:ntfs

If you are trying to convert a system drive, some files of which are being used by Windows, you may get the following message:

 Convert cannot  run because the volume is in use by another process

In this case, press Y and let your PC reboot. Conversion will take place at next startup.

If you are converting a volume, that is not currently used by any processes, you'll see it converted to NTFS file system.