A hard drive system has 2 circular disks with a total of 4 surfaces. The disk has 5000 tracks, each with 2000 sectors. How many sectors can be read without the reading head having to make a mechanical movement?
Without making a mechanical movement, the reading head can read all the tracks that fall in the same cylinder. A cylinder includes one track from each surface. Since the system has 4 surfaces, there are 4 tracks per cylinder. The number of sectors per track is 2000. Therefore, the total number of sectors that can be read without mechanical movement is: \[ 4 \text{ surfaces} \times 2000 \text{ sectors/surface} = 8000 \text{ sectors} \]
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