Describe the concept and importance of disk defragmentation.

Concept of Disk Defragmentation: Over time, as files are created, edited, and deleted on a Hard Disk Drive (HDD), data blocks become fragmented and scattered across non-contiguous sectors. Disk Defragmentation is the utility process of physically reorganizing fragmented file contents so that file parts are stored in contiguous memory blocks.

Importance of Disk Defragmentation:

1. Faster Disk Access & Read Speed — Reduces physical drive head movement, accelerating file load times.
2. Improved System Performance — Decreases application launch delays and boot time.
3. Extends Hard Drive Lifespan — Reduces mechanical strain on drive heads and spindles.
4. Frees Up Contiguous Space — Simplifies storage allocation for large new files.