The really really really easy step-by-step computer book 2
Gavin Hoole and Cheryl Smith
“If you’re curious to see the details of the process, click on the Show Details button in the Defragmenting Drive C dialog box. Be aware though, that by showing details, the Defrag process will take much longer. But if you have nothing better to do on a Friday night, by all means click on Show Details and you’ll find yourself sitting in front of your computer, mesmerized by the defragging process.
Follow all links from above url