I found the following site that explains what you need to do, I will simply summarize for my specific application/needs: http://www.lockergnome.com/usrbingeek/2007/05/03/how-to-make-custom-drive-and-folder-icons-for-your-mac/ Make an image that is 128px by 128px in Photoshop (other other program) Save as a PSD or as a PNG file with a transparent background If you don’t have Apple’s Developer Tools installed,…