www.jstechs.com > System Tools > Disk Defragmenter
Every time a file is deleted the space it occupied on the hard drive becomes free for the system to make use of. The next file that is saved will fill that space and, if it's bigger, overflow to another part of the hard drive becoming fragmented. It is helpful after awhile to "Defragment" the hard drive so that when you open a file or program it can all be collected from one physical position on the drive.
It is a good idea to defragment your hard drive at least once a month, or after you uninstall a large program or delete a lot of large files. To defragment your hard drive, go to: Start > All Programs > Accessories > System Tools > Disk Defragmenter.
When the process is complete you will see this dialog allowing you to either finish, or view a report.
