Windows Vista and Windows 7 both include a utility called Disk Cleanup, which can be used on both internal and external drives to remove unnecessary and temporary files. Once these files are removed, the space available on the volume will be increased and your system may operate faster. It is good practice to periodically cleanup all of your hard disks, because temporary and unneeded files are constantly being saved to your hard drives as a result of Web browsing and the installation of programs and updates. Writer Bio
