A fixed hard disk drive is used to store the operating system and installed applications, and has cooling fans built in. A portable hard disk drive stores large files without cooling fans due to size constraints, and draws power from USB. Hard disks have revolutionized the digital age by providing widespread storage of information and data, transforming modern computing.

7. PARTS OF HARD DISK

8. FIXED HARD DISK DRIVE PORTABLE HARD DISK DRIVE
• used to store operating system • used to store very large files
• has your installed applications • Just has raw files
• tend to have fans built into them • do not come with cooling fans due
to the lack of space
• come with their own power adapters • designed to draw power from the
USB connection

9. IN CONCLUSION
A hard disk has revolutionized the
digital age . Hard disk are the most
widely used technology for storage
of our information and data.
Without hard disk the computer
digital age we live in would not be
the same