Question

4. What is the need of defragmentation?​

Answer 1

Answer:

Defragging your computer can both solve and prevent a number of problems. If you don't regularly defrag your hard drive, your computer may run slowly and/or may take a long time to start up after you turn it on. If a hard drive is too fragmented, your computer may freeze up or not start at all.

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Answer 2

Answer:

The process of defragmentation moves the data blocks on the hard drive around to bring all the parts of a file together. Defragmentation reduces file system fragmentation, increasing the efficiency of data retrieval and thereby improving the overall performance of the computer.