How Disk Defragmentation Works

By Siddharth Gaur | Apr 26, 2008

When we check the To Do list for computer maintenance the Disk Defragmentation is one of the very first tasks we have to perform to get our PC running fast and healthy. Ever wondered what is it and how does it work? Well here is the answer.

All you computer data are stored on the hard disk drive and hard disk store it in rings. Rings are the round part of the magnetic disk in HDD. In rings there are sectors and each sector holds different data. Hard disk have a arm that you have seen in many HDD images which moves from one place to another to get desired data and read it.

When you store a new data it get stored in these sectors and when you demand this data back, the arm moves in all the drive and collects it. Because moving of this mechanical arm is a slow process, we always want that all data should be kept as near as possible in hard drive.

Lest understand it in this way. You have a big home with 7 rooms. You have to drink a tea, sugar is in you own room but tea is in room 2, hot water in room 4 and a cup is in room 7. To drink a tea you have to get all the desired items in one place and then you have to move your arm to get all these things in one place. So it consumes more time and power. If all of these will be in one place you will be done in seconds. So this is how disk defrag works.

Disk Defragmentator in Windows and other OS utilise all the files in a way that how Operating System uses it. So when we access an application, its load time will be significantly low then a fragmentated drive where all the data is spread in different rings and sectors.

So it is always good to defragment your Hard Drive, like every week and so. This is a time consuming activity, so you should plan you schedule accordingly. Also insure that there is no application or program running when you defrag hard disk drive so it can perform better. Defrag your driver more often if your disk usages are high. This will help you to maintain a fast computer as it comes on the day one.

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1 Comment so far
  1. niman April 28, 2008 3:35 pm

    Nice article, its very important to defragment in order to ensure drive health and stave off premature hardware upgrades. I use an automatic defragmenter on my systems to save the time and money needed in maintaining them. It does a fantastic job without failing the task.

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