[8930] in linux-scsi channel archive
Re: drives not reported as full size
daemon@ATHENA.MIT.EDU (Gavin Clark)
Wed May 31 02:54:06 2000
Date: Tue, 30 May 2000 23:51:00 -0700
From: Gavin Clark <gavin@datacor.com>
To: <linux-scsi@vger.rutgers.edu>
Message-ID: <B55A0464.A5E%gavin@datacor.com>
In-Reply-To: <Pine.LNX.4.21.0005301652320.5973-100000@anime.net>
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thanks, I thought it might be something like that. saves me the trouble of
reformatting I guess.
Gavin
on 5/30/00 4:53 PM, Dan Hollis wrote:
> On Tue, 30 May 2000, Gavin Clark wrote:
>> I have two new IBM drives. they are supposed to be 18.2 Gb but they are only
>> reported as 17.5Gb by linux and the scsi bios.
>> is this normal or can I change a setting or two to get the full capacity.
>
> 18000000/1024 = 17578
>
> Welcome to the wonderful world of vendor specs != pc measurement units
>
> -Dan
> Usually drive manufacturers give the advertised size of a drive based on a
> megabyte being a million bytes, not the actual value of 1,048,576 bytes. They
> also seldom allow for any "overhead" in formatting the drive.
>
> Jim K.
>
> I think the disk industry reports disk sizes with 1K = 1000Bytes?
> That would explain the difference.
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