How does Disk Defragmenter work in Windows98?
Windows 98 boasts a significant change to the Disk Defragmenter (Defrag). In this revision, Defrag relocates the executable and supporting files of Windows programs to a single contiguous area of the hard disk. This placing of a program and all of its supporting files into contiguous disk space can significantly increase the speed at which the application loads and executes. Defrag is also different in that it can literally fragment program files to improve start times.