Defragmenting Your Hard Drive Improves Performance

One of the most venerable suggestions for improving disk performance is to defragment your hard drive regularly. The science of defragging is sound: By putting all the bits of a file or application in sequential order on your drive, the drive should have to do less work (and spend less time) to access those files. Thus: faster performance. Well, in practice it’s not really true. Today’s hard drives are fast enough to make fragmentation largely irrelevant, and our benchmark tests have repeatedly borne this out: On moderately fragmented drives, defragmentation will offer negligible to no performance increase. For seriously fragmented drives (think 40 percent or more), especially those running XP or older OSes, defragmentation can help, but don’t expect the world. As for third-party defrag tools, there’s no real evidence that they’re any more effective than Windows’ built-in defragger.

Click Disk Defragmenter under Accessories / System Tools.