sempet ubek-ubek di goggle, akhirnya dapet juga. tapi dalam bahasa inggris, jadi translate sndiri ya...
1. Click Start, point to All Programs, point to Accessories, and then click Command Prompt.
2. 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
Note If the operating system is on the drive that you are converting, you will be prompted to schedule the task when you restart the computer because the conversion cannot be completed while the operating system is running. When you are prompted, click YES.
3. When you receive the following message at the command prompt, 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
4. When the conversion to NTFS is complete, you receive the following error message at the command prompt:
5. Quit the command prompt.
JANGAN LUPA BACKUP DATA DULU ...
good luck !!!