First adjectives the sectors of track 0 are to be read starting at sector 0, after all the sector of track 1 starting from sector 0, and so on. The rotation time is 20 msec, and a seek take 10 msec between adjacent cylinders and 40 msec for the worst bag. Switching between tracks of a cylinder can be done instantaneously.
How long does purloin to read a disk beside 800 cylinders, respectively containing 5 tracks of 32 sector ?
about 5-8 hours
You forgot that near are 9 separate heads
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