Shadow copies are generally images of old files and folders which Windows saves as backup. Usually when you run a backup utility, Windows stores a shadow or a copy of all the files and folders available on your computer at that time in its special memory. If you turn on your System Protection in windows, every time you make a change in your files or folders then windows will save its shadow copy. This process takes considerable amount of disk space. Follow this step by step guide to learn how to delete shadow copies in windows 7.