Definitions for "Disk Defragmenter"
Defragmentation is the rewriting of all the parts of a file on contiguous sectors. When files on a hard disk drive are being updated, the information tends to be written all over the disk, causing delays in file retrieval. Defragmentation reverses this process, and is often achieved with special defragmentation programs that provide up to 75 percent improvement in the speed of disk access and retrieval.
a program that helps the computer organize files more efficiently
a utility that rearranges your fragmented files and the free space on your computer so that files are stored in contiguous units and free space is consolidated in one contiguous block