How to Add, Change, or Remove a Drive Letter in Vista, Windows 7, and Windows 8
This will show you how to add, change, or remove a drive letter for any drive installed or connected to the computer in Vista, Windows 7, and Windows 8.
You can only assign the letters D to Z to each drive on your computer.
The letters A and B are usually reserved for floppy disk drives. If you do not have a floppy disk drive installed, then you could assign A and B to a drive, partition, or volume if you like. However, it's not recommended to assign A and B to anything other than a floppy or floppy substitute.
The letter C is reserved for the drive or partition that the operating system (Windows 7 or Vista) is installed on. If you multi boot...