ignazio_io at yahoo.it
Thu May 14 14:37:43 UTC 2009
Derek Broughton wrote:
> Ignazio Palmisano wrote:
>> The 500GB is probably measured "industry-style", i.e., 500 billion bytes
>> (5 x 10^11 bytes - hope I got the numbers right). Considering that the
>> real factor is 1024 instead of 1000, 500 gb declared = 476 gb real
> Aargh. How many times do we have to repeat: that is NOT "industry-style",
> it's ISO standard. The "real" factor would be 1024 if the size was given as
> 500GiB. It's only confusing because people insist on saying "500 gb
> declared = 476 gb real".
Sorry for attributing marketing intentions to producers.
So it is 500 GB = 476 GiB, right? Then another ~20 gigs being used
between partition table and file indexes for the various partitions. I
guess that accounts for the size Steven is seeing.
> In any case, its never been true of disks. The numbers manufacturers report
> are "unformatted", and no disk ever sold has actually been able to store
> that many bytes once formatted into cylinders, tracks and sectors.
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