Hard Disk:
Hard disks are the secondary storage devices used to store data permanently. It is directly connected to the disk controller on the motherboard. Hard disks are flat, circular plates made of aluminum or glass and coated with a magnetic material. Hard disk platters typically spin very fast at 5400 to 7200 cycles/minute.
It has unlimited storage space and its storage capacity ranges from 20 GB to 500 GB. It used to install a new program or application on the device. Software programs, images, videos, etc. all can be saved to the hard drive. There are two types of hard disks.
1. Internal Hard Disk:
Internal hard drives are located inside your computer. Most computers come with a single internal hard drive, which includes the operating system and pre-installed applications.
2. External Hard Drive:
An external hard drive, also called a portable hard drive. It is a device connected to the outside of a computer via a USB connection. It is often used to back up a computer or portable storage.
