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From: "Omer Faruk Sen" <freebsd@faruk.net>
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Date: Fri, 21 Nov 2003 01:56:04 -0500
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Subject: Re: 200gb hard drive?
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Thanks for all answers. That space problem was bothering me all the times 
and I have learnt the reason for space loss. By the way I admit that I have 
to make more search on google before sending that to here. 

But it can be very nice that this information to be added on handbook. Or is 
it in handbook already? 

 

Frank Knobbe writes: 

> On Thu, 2003-11-20 at 14:56, Derrick Ryalls wrote:
>> When manufacturers talk about drive size, they use base 10.  When computer
>> report drive size, they use base 2.  So, if you divide 200,000,000 bytes by
>> ( 1024 * 1024 ), you get roughly 190gig in binary, so off the bat you lose
>> 10gigs of space due to marketspeak translation.
> 
> That's not always the case. I have seen disk manufacturers use something
> like base 20 :)  In other words, they advertise a 160 GB drive which
> only holds 120 GB. I hope they get sued for this crap.... talk about
> deceptive marketing...geesh... 
> 
> Frank 
>