Changing icon of a drive is fun. You can easily change icon of any drive. You have to create AUTORUN.INF file on the root of any drive but remember that this method will work only on Windows environment. MAC and Linux can not understand this file.

Creating AUTORUN.INF
Open any simple text editor. Notepad is best for Windows user.
Type the following lines in AUTORUN.INF

[autorun]
icon=myicon.ico

Remember that put this file on main root of drive. For example its path can d:autorun.inf
After completing this file restart your Windows.
Open My Computer. You can see changed icon of your drive.