Jun 11, 2017 04:02 PM
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Hard disk is nothing but large amount of storage media on pc.it gives free spaces to store the information, folders, software, pictures or lot more things on it. basically it has set of stacked disks which has electromagnetically in concentric circle known as track on the disk. one componant like head which is uesd to record or read the information.there are two head uesd for read or write information on disk.
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