What is a Hard Drive?

A hard drive is the main storage device of a computer. It keeps your operating system, programs and files even when the power is off.

HDD vs SSD

• HDD (Hard Disk Drive): Uses spinning disks. Cheaper, more storage.
• SSD (Solid State Drive): Uses flash memory. Much faster, no moving parts.

Storage Capacity

Storage is measured in gigabytes (GB) and terabytes (TB). A 1 TB drive holds about 1000 GB of data.

Storage vs Memory

Storage keeps files permanently, while RAM (memory) is temporary and clears when the computer turns off.

Why It Matters

An SSD makes a computer start and open programs much faster. Choosing the right storage improves performance a lot.