If you are bored of seeing the default icons for hard drives on Windows 7, then you can add some changes to the drive icons with Windows 7 Drive Icon Changer. This simple and free utility can easily change the drive icons of any drive you select. Once you run the application, it shows a list of drives as a drop down list. You can select the drive which you want to change and click install button. You will be prompted to select an file for the icon.
Please note that you will need a .ico file to change the icons of the drive.
Related: Change Drive Icons in Windows 7
If you want to uninstall any previously installed icons, you can select the drive and click on the Uninstall button. This free tool is created by Deviantart user. Windows 7 Drive Icon changer does not require any installation and is completely portable.