For reading, the surface is moved past the read/write head, and the bits that are present induce an electrical current across the gap. See hard disk. THIS DEFINITION IS FOR PERSONAL USE ONLY.

A hard disk drive uses magnetism to store data on a rotating disk. A read/write head floats above the spinning disk reading and writing data. The faster the disk spins, the faster an HDD performs.

The data are rendered unreadable, and the drive has to be replaced. However, in some cases, the data can be recovered (see data recovery). The read/write head on a hard disk hovers above the ...

One fun aspect of 1970s-era hard disk drives ... corroded DIP switches, to head alignment sensors, a defective analog board and ultimately a reported bad read-write head. Frustratingly, even ...