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From: Phillip Susi <psusi@cfl.rr.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Seewer Philippe <philippe.seewer@bfh.ch>,
	Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>,
	linux-kernel@vger.kernel.org
Subject: Re: RFC: disk geometry via sysfs
Date: Wed, 15 Feb 2006 10:20:58 -0500	[thread overview]
Message-ID: <43F346DA.4020404@cfl.rr.com> (raw)
In-Reply-To: <1140012392.14831.13.camel@localhost.localdomain>

Alan Cox wrote:
> On Mer, 2006-02-15 at 10:01 +0100, Seewer Philippe wrote:
>   
>> This would mean dropping the HDIO_GETGEO ioctl completely and force
>> applications such as fdisk/sfdisk and even dosemu to determine disk
>> geometry for themselves. Which I think actually would be the most
>> correct approach.
>>     
>
> In the IDE case the drive geometry has meaning in certain cases,
> specifically the C/H/S drive addressing case with old old drives. 

I thought that C/H/S addressing was purely a function of int 13, not the 
hardware interface?  If it is a function of some older hardware 
interfaces, then we are still talking about two different, and likely 
incompatible geometries:  the one the disk reports, and the one the bios 
reports.  The values in the MBR must be the values the bios reports. 



  parent reply	other threads:[~2006-02-15 15:22 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-02-10 13:06 RFC: disk geometry via sysfs Seewer Philippe
2006-02-13  9:56 ` Bartlomiej Zolnierkiewicz
2006-02-15  7:57   ` Seewer Philippe
2006-02-13 16:32 ` Phillip Susi
2006-02-13 19:02   ` Seewer Philippe
2006-02-13 19:22     ` linux-os (Dick Johnson)
2006-02-13 19:36       ` Phillip Susi
2006-02-14 16:35         ` Seewer Philippe
2006-02-13 19:34     ` Phillip Susi
     [not found]       ` <43F206E7.70601@bfh.ch>
2006-02-14 18:19         ` Phillip Susi
2006-02-15  8:39           ` Seewer Philippe
2006-02-15  8:51             ` Bartlomiej Zolnierkiewicz
2006-02-15  9:01               ` Seewer Philippe
2006-02-15 14:06                 ` Alan Cox
2006-02-15 14:11                   ` Seewer Philippe
2006-02-15 15:15                     ` Alan Cox
2006-02-15 15:29                       ` Phillip Susi
2006-02-16  8:12                         ` Seewer Philippe
2006-02-16 15:36                           ` Phillip Susi
2006-02-16 15:41                             ` Seewer Philippe
2006-02-16 16:15                               ` Phillip Susi
2006-02-15 15:20                   ` Phillip Susi [this message]
2006-02-15 16:06                     ` Alan Cox
2006-02-15 16:20                       ` Phillip Susi
2006-02-15 17:32                         ` Alan Cox
2006-02-15 18:43                           ` Phillip Susi
2006-02-15 19:23                             ` linux-os (Dick Johnson)
2006-02-15 20:54                               ` Phillip Susi
2006-02-15 21:41                                 ` linux-os (Dick Johnson)
2006-02-15 22:43                                   ` Phillip Susi
2006-02-16 12:33                                     ` linux-os (Dick Johnson)
2006-02-16 15:26                                       ` Phillip Susi
2006-02-16 16:15                                         ` Seewer Philippe
2006-02-16 17:01                                           ` Phillip Susi
2006-02-16 16:39                                         ` linux-os (Dick Johnson)
2006-02-16 17:09                                           ` Phillip Susi
2006-02-16 19:01                                             ` linux-os (Dick Johnson)
2006-02-16 19:55                                               ` Phillip Susi
2006-02-16  8:18                           ` Seewer Philippe
2006-02-16 18:14                       ` Matt Domsch

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