DiskMagik defragments the hard drive of a Windows PC, and includes several powerful features not included in the Windows defrag utility. It can reorder files on the disk, permitting faster file access on demand. It also includes our exclusive "Proactive Defragmentation" technology, giving the option to run DiskMagik silently in the background. A MUST-HAVE for all those interested in maintaining their computer system in peak operating condition.