A hard drive
is a computer component that holds data. Every computer needs at least
one hard drive to store its operating system, programs and user
information. This drive usually is internal, or built into the computer,
but as computer systems have evolved and different needs, threats and
circumstances have arisen, external hard drives have become more
popular. External hard drives usually are used in addition to internal
hard drives in order to store more data. They also allow the user to put
sensitive, confidential or otherwise important information on them,
then disconnect them and store them in secure locations.
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