what is hard disk

what is hard disk, what is a hard drive, what is external hard drive

what is hard disk

Inside the case, you will notice a solid and heavy rectangular metal box. This is called hard drive where data are stored permanently and programs are installed. Hard Drive is called permanent storage or long-term storage. Since the data stored in hard drive are not lost if the computer is turned off or rebooted.

When a particular program (e.g. Word Processor) is executed or a file is opened, some relevant portion of data is copied from the hard disk to the RAM. This is why computer with faster hard drive can start up and load program quickly.

Hard Drive Manufacturer: Major manufacturers of hard drive today are: Western Digital, Seagate, and Toshiba.

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