What is Defragmentation in computer?

The defragmentation process is the reorganization of files on a storage device so that the files are contiguous. The purpose of defragmentation is to improve system performance by reducing the number of fragments on the disk. When a file is fragmented, the operating system must search through multiple fragments of the file every time the file is accessed. Defragmentation places the fragments of each file near one another, which reduces the number of disk accesses required to read the file.

Fragmented files can also cause system errors and data loss. The defragmentation process rearranges the …