What is the reason of memory gap in hard drives?

Question

I want to know that what is the exact reason behind memory difference in our hard drives or pen drives .

As when we say , We have a pen drive of 4GB but actual usable space is 3.7GB . What happens to the rest of memory? Are the manufacturing companies stealing these memory spaces from us or there is any technical reason behind this?

Thanks,

Nitesh Kumar

http://stackoverflow.com/questions/175176/advertised-disk-space-vs-actual-disk-space — Pawel, Jul 13 '12 at 08:52

score 2 · Accepted Answer · answered Jul 13 '12 at 08:45

2

They use decimal prefixes, you're using binary prefixes. This gives a discrepancy of approximately 2.4% per prefix magnitude.

answered Jul 13 '12 at 08:45

Ignacio Vazquez-Abrams

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Thanks Ignacio Vazquez-Abrams !!! – Nitesh Kumar Jul 13 '12 at 09:56

What is the reason of memory gap in hard drives?

1 Answers1