To read the data, the magnetised spots on the disk are converted
into electrical impulses, which are then transferred to the pr
oces-
sor (Figure 2.8). Writing data onto the disk is accomplished by
converting the electrical impulses received from the processor into
magnetised spots on the disk. The data in a magnetic disk can be
erased and reused virtually infinitely. The disk is designed to reside
in a protective case or cartridge to shield it from the dust and other
external interference.
2.7.1 Storage Organization of a Magnetic Disk
The surface of a disk is divided into imaginary tracks and sectors. Tracks ar ...
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