Fragmentation is a fragmented unit of a file which
They have a great impact on Windows system performance. If a file is separated into too many fragmentations, it will take a long time to access all the fragmentations before system can load the file or run it. If the file is stored as a unit contiguously, it takes few seconds to open it. In other word, they reduce the data access speed of your hard disk, therefore the system performance.
You may not notice the impact, if you are using a brand new computer which has a few files in it. Over time, as you save more and more files in your computer, you will notice that it takes more and more time to load a file and the system performance is degraded. That is caused by disk fragmentation. To reduce or eliminate the fragmentations and increase the computer performance, you need to defragment your hard disk regularly.
Advanced Defrag is a Disk Defragmenter that you can use to defragment the whole hard disk. You can click here to download and defragment your disk. You can free scan your Hard Drive Here: Free Defrag Download