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Previous Year Question (PYQs)

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?





Solution

Without mechanical movement of the reading head, the system can read sectors from the same cylinder.

A cylinder consists of the same track number across all surfaces.

Given:

Number of surfaces $=4$

Sectors per track $=2000$

So, sectors readable without head movement:

$4\times 2000=8000$


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