Hard
Disk Drive (HDD):
It
is a rigid magnetic disc that is used to store data. It permanently stores data
and is located within a drive unit.
The
hard disk is also known as a hard drive. It is a rigid magnetic disc that
stores data permanently, as it is a non-volatile storage device. The hard disk
is located within a drive unit on the computer's motherboard and comprises one
or more platters packed in an air-sealed casing. The data is written on the
platters by moving a magnetic head over the platters as they spin. The data
stored on a computer's hard drive generally includes the operating system,
installed software, and the user's files and programs, including pictures,
music, videos, text documents, etc.
Components
of Hard Drive:
The
main components of a hard drive include a head actuator, read/write actuator
arm, read/write head, platter, and spindle. A circuit board, which is called
the disk controller or interface board, is present on the back of a hard drive.
It allows the hard drive to communicate with the computer.
1 Sector = 512
Bytes
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