fat - fat32 to ntfs
Open a dos prompt and give the command
c:\convert d: /fs:ntfs
this command would convert your d: drive to ntfs.
cannot lock the drive, you will be prompted to convert it during
Normally you should select yes.
Conversion from fat/fat32 to ntfs is non-destructive, your data on
the drive will NOT be lost.
Be aware that converting to ntfs will make that partition of your
drive unreadable under dos unless you have ntfs utilites to do so.