Defragmenting The Computer's Hard Drive
Put simply: During normal operations of your computer, data (files, music, pictures, etc.) are added and removed from the hard drive. As the data is added and removed over time, files can be split, and spaces between the data can occur. This causes the read/write heads to take more time to search the platters for data and it takes longer to make it available for use. De-fragmentation of the hard drive organizes and compacts the data so the data is found quicker by the read/write heads and therefore, somewhat increases performance of the computer. How much it increases performance has been a topic of debate in these forums for years and much depends on the way you use the computer. It's really not necessary to defrag too often unless you add and remove large amounts of data from the hard drive on a regular basis..
As to "HOW" you defrag, you can perform the action on most versions of Windows by clicking on Start-All Programs-Accessories-System Tools-Disk Defragmenter. Once the program window opens, click once on the drive you want to defragment, then click on the "Defragment" button.. On later versions of Windows, you can schedule the process within the same program procedure. As Kees stated in his post, there are other third-party defragmenters available but since they don't increase performance by a great amount, the Windows version has worked well for me.. It's up to you.
Hope this helps.
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