 Hard
Drive is the secondary storage device
of the computer. The basic Purpose
of hard drive is to physically store
the data. So that it can be retrieve
in future for processing. On the hard
disk the data is store in the form
of digital signal. Data is store on
the clusters of the hard drive. Before
writing a text on hard disk it is
necessary to format its surface. There
is two type of formatting one is known
as Low Level Formatting and other
is known as High Level Formatting.
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