Have you been bothered by the slower and slower computer speed? Besides using anti-virus and changing some values in the registry to optimize computer performance, you can also use other methods to speed up PC. And defragmenting disk is a good method that you cannot miss.
In this article, you can learn something about defragmentation that is very helpful for you, I am sure.

Since you have performed too many times of reading, writing and deleting operations in the disk, it, to some degree, influences system performance for sure. You can startup the Disk Defragmenter of Windows by clicking “Start”—“All Programs”—“Accessories”—“System Tools”—“Disk Defragmenter”. Besides, you can also click “View Report” to check how many disk spaces are being used and click cutline to view the details of defragmentation.

And, Windows defrag can not defragment all the hard disk at one time but to deal with one by one. Therefore, you should optimize each disk partition manually.
You can startup Disk Defragmenter directly and remember that you should defragment without any programs running. However, there is one thing you should bear in mind that some Windows systems do not put disk defragmenter in the Start menu but pocket it, such as Windows 2000. You can use it by following the steps below:

Start the explorer or “My Computer” and right-click the disk partition you want tot scan. In the popping up shortcut menu, choose “Properties”. Then, in the dialog box, click “Tools” tab and choose “Check Now”. The system can activate the Disk Defragmenter automatically. What you need to decide is to choose whether “Automatically fix file system errors” and “Scan for and attempt recovery of bad sectors” or not. At last, click “Start”, then the system can scan the disk based on user’s requirement.

In order to speed up PC, you should try method as many as possible. Since it is a good idea to defragment disk, it is worthwhile for you to have a try. And, you find other tools to help you instead do it manually.