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From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
To: micah milano <micaho@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: SiI3112 Serial ATA Maxtor 6Y120M0 incorrect geometry detected
Date: Sun, 26 Sep 2004 00:15:33 +0200	[thread overview]
Message-ID: <58cb370e04092515157e9b72ef@mail.gmail.com> (raw)
In-Reply-To: <70fda3204092514037c6dc039@mail.gmail.com>

Hi,

This was discussed to death on lkml.

To make long story short:
- BIOS CHS is _useless_ for IDE driver
- IDE driver returns different geometry for 2.[2,4,6].x kernels
- Andries removed ide-geometry.c in 2.5 but didn't HDIO_GETGEO ioctl
- BIOS CHS is available through EDD driver now
- this is a parted problem

I'm tired of this issue and this is what I'm going to do:
- remove CHS info from IDE printks and /proc/ide/
- add BLKGETSTART ioctl for getting partition's start sector
  (this is the only legitimate use of HDIO_GETGEO currently)
- at least obsolete HDIO_GETGEO in IDE or even remove it (failing is
  better than returning unexpected results)
- silence complainers :)

Bartlomiej

On Sat, 25 Sep 2004 16:03:15 -0500, micah milano <micaho@gmail.com> wrote:
> Some interesting additional information... if I boot with 2.4.25, the
> CHS in the dmesg changes to something else, in 2.6.7 it was
> CHS=65535/16/63, in 2.4.25 it becomes CHS=238216/16/63.

  reply	other threads:[~2004-09-25 22:15 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-09-25 19:14 SiI3112 Serial ATA Maxtor 6Y120M0 incorrect geometry detected micah milano
2004-09-25 21:03 ` micah milano
2004-09-25 22:15   ` Bartlomiej Zolnierkiewicz [this message]
2004-09-25 23:44     ` Alan Cox
2004-09-26 10:29     ` Andries Brouwer
2004-09-26 10:59       ` Bartlomiej Zolnierkiewicz
2004-09-27 15:50         ` micah milano
2004-09-27 19:31           ` Andries Brouwer

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