A 2.5 inch diameter disk plate has 6 plates , 512 bytes per sector , 256 sectors , 5268 tracks per surface. What is the capacity of the disk in terms of Giga bytes ?(adsbygoogle = window.adsbygoogle || []).push({});

In the solution of my book ..written:

6 plates = 6x2-2 = 10 recording surfaces// I dont understand this part.

Could you please explain this ?

Ans: 6.43 GB

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# How to calculate the capacity of a disk

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