miniature it professionals diagnosing and fixing hard drive

hard disk drivea drive hdd fixed electro-mechanical data storage device stores retrieves digital magnetic one rigid rapidly rotating platters coated material paired heads arranged moving actuator arm read write platter surfaces accessed random-access manner meaning individual blocks stored retrieved order hdds type non-volatile retaining powered modern typically form small rectangular box professional computer work worker diagnose diagnostic daignosing microprocessor micro microcomputer miniature professionals diagnosing fixing