2. In the resulting dialog select Change.
3. In the next dialog box select the desired drive letter.
After clicking OK, a dialog box will warn you that some programs may not work. If the problem arises, you can go back and change the letters again.
Note: You can change the character of the external drive, but the change will not be long. Every time you plug a storage device into a USB port, Windows will give it the first drive letter available.