On Wed, Feb 29, 2012 at 11:23:11AM +0200, Alan McKinnon wrote:

> > So, cfdisk is happy with the change but nothing else seems to see it.
> > What am I missing here?  Where did the 50Gbs go to?
> > 
> > Dale
> > 
> > :-)  :-)
> > 
> 
> Nowhere.
> 
> Disk manufacturers measure kilos of data as 1000
> Everyone else measures it in 1024

Well, to nitpick, they say it correctly, as for their "kilo", 10^3 bytes is
correct. We, the binary folk, assert kilo to be 2^10 bytes which is actually
called kibi, but we still use "kilo" in our everyday language thanks to
historical ballast (and because, as I recently heard, the -bi units aren't
around that long yet). First time I heard of them was in uni lecture ~2003±1.

> They do this because it fudges disk sizes to appear 2.4% bigger than
> they really are. 
> 
> When you get into TB drives, it gets worse as 1024*1024*1024*1024
> differs from 1000*1000*1000*1000 bu a lot more than 2.4%

By 1.024^4, which is 1.0995 to be precise. Those swines are stealing almost
10% from us. :o)
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