From: Guest section DW <dwguest@win.tue.nl>
To: Josh Fryman <fryman@cc.gatech.edu>, linux-kernel@vger.kernel.org
Subject: Re: IDE drives mis-reporting size... bug or feature?
Date: Wed, 20 Jun 2001 20:34:44 +0200 [thread overview]
Message-ID: <20010620203444.A22204@win.tue.nl> (raw)
In-Reply-To: <3B30E4CC.3794331@cc.gatech.edu>
In-Reply-To: <3B30E4CC.3794331@cc.gatech.edu>; from Josh Fryman on Wed, Jun 20, 2001 at 02:00:44PM -0400
On Wed, Jun 20, 2001 at 02:00:44PM -0400, Josh Fryman wrote:
> this is an odd one. i think it's technically a feature
> but might be perceived instead as a "bug". anyway, i've
> got a pair of Ultra100 Maxtor 52049h4 20GB drives, on a
> Promise Ultra 100 (PDC20267) controller.
>
> the drives were popped in with the jumper on for the
> 4096 cylinder limit forced.
>
> the promise controller recognizes the drives on boot-up
> init as being what they are - ~20GB - and continues on
> merrily.
>
> Windows 2000 recognizes the drives as ~2GB in size, due to
> the jumper. it's observing the 4096cyl limit on the drive
> in some way. (remove the jumper and it sees ~20GB too.)
>
> Linux 2.4.3 recognizes the drives as ~20GB regardless of
> the jumper.
>
> so, is this a bug or feature? is windows or linux not
> working right here? what *should* be seen with the drive
> jumpered such?
The jumper is to overcome a BIOS defect.
The operating system should see the true size.
In order to get Windows to see the true size you may need MaxBlast
or similar boot manager stuff.
prev parent reply other threads:[~2001-06-20 18:35 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-06-20 18:00 IDE drives mis-reporting size... bug or feature? Josh Fryman
2001-06-20 18:34 ` Guest section DW [this message]
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