A hard drive consists of one or more magnetic platters or disks and a read arm with two electromagnetic coils for each disk. Each hard disk is divided into many sectors,
each containing a certain amount of data. As of now, it is the cheapest and most common way to store a lot of data in a small space.
each containing a certain amount of data. As of now, it is the cheapest and most common way to store a lot of data in a small space.
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