How to convert from FAT32 to NTFS with Command Prompt without reformating

To see what is the format of the tabulation of your HardDrive, go to My Computer, select a Hard Drive then click on Properties.

1. As a safety measure, you might want to make a complete backup on a CD or DVD. A problem might occur, even if it's usually rare.

2. Click on the Start Menu and select RUN. Type in: cmd in the dialog box.

3. In the Command Prompt Window, type in:

Convert L: /FS:NTFS     (L: is the letter of the drive)

4. If some files are currently in use, the command prompt will probably propose you to force a temporary unmount. If you're trying to convert your main drive with Windows installed on it, you will have to reboot your computer. In that case, the conversion will occur when rebooting.