With time computer file-system becomes fragmented and defragmentation is required to achieve optimal computer performance, Windows provides basic disk-defragmentation utility and suggest running it as a part of regular scheduled system maintenance routine, the built-in Windows defragmentation utility has some limitations and specialized software utilities exist to fill these gaps offering better defragmentation for maximum system performance.

One such professional utility is Paragon Total Defrag 2009 offering total file system defragmentation and optimization using low-level defragmentation to achieve almost zero fragmentation level, the utility costs $29.95 to buy but you can get a free legal copy under a special promotion as discussed at the end of the post.