Re: [SLE] Hard drive size question
From: Jorge Manuel B. S. Vicetto (bb+shared.it.lists.suse-e_at_esenfah.pt)
Date: 06/22/04
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Date: Tue, 22 Jun 2004 18:13:11 +0000 To: suse-linux-e@suse.com
Quoting Dylan <dylan@dylan.me.uk>:
> On Tuesday 22 Jun 2004 17:23 pm, Thom Nuzum wrote:
>> My hard drive is a Seagate 160G. SUSE reads it (both 9 and 9.1) as
>> 149GB plus 1 Gb for swap on partion stage of install.
>
> As others have said - this is because HD manufacturers can't count in
> binary correctly. The bigger the drive the greater the discrepancy so
> more and more people are going to notice as drives grow...
>
I can sympathize with everyone and wish that when a disk manufacturer says a
disk has a 160GB capacity, it really had 160 * 1024 * 1024 * 1024 bytes.
However, for the record, they are right. The ISO defined Giga prefix
corresponds
to 1 * 10^9. Therefore, when one says a disk is 160GB, one is saying that it
has 160 * 1000 * 1000 * 1000 bytes and not what we would like it to have. It
was the computer industry who decided to abuse the ISO kilo prefix and say it
was 1024, instead of 1000. The computer "guys" and "gals" like to think in
binary, but the ISO prefixes, as most of the world ;-), are based on decimal
numbering.
>> Kquick disk tells me its 145.2 GB.
>
> This difference is the overhead of actually writing a filesystem to the
> partition.
>
>> Just wondering why the difference and where is the 5-10G.
>> Is this anything to worry about?
>
> Nope, it's perfectly expected
>
> HTH
>
> Dylan
>
> --
> "I see your Schwartz is as big as mine"
> -Dark Helmet
>
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------------------------------------------
Jorge Manuel B. S. Vicetto
Network Manager and Systems Administrator
Angra do Heroísmo Nursing School (ESEnfAH)
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