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From: "Andrew S. Johnson" <andy@asjohnson.com>
To: linux-kernel@vger.kernel.org
Subject: Re: IDE-SCSI grabs too many drives
Date: Sun, 05 Jan 2003 02:28:55 -0600	[thread overview]
Message-ID: <3E17ECC7.7090203@asjohnson.com> (raw)
In-Reply-To: <fa.g96qm0v.1q1m9id@ifi.uio.no>

J.A. Magallon wrote:
> On 2003.01.04 Andrew S. Johnson wrote:
> 
>>I have append="hdc=ide-scsi" in my lilo.conf file,
>>but when I modprobe ide-scsi, it grabs both the
>>CD-RW and the DVD-ROM:
>>
> 
> 
> I think the correct param is "hdc=scsi", with incorrect param and no
> ide-cd loaded, probably ide-scsi grabs anything it can...
> 

Actually, I guessed on my own, and this solves it:

append="hdc=ide-scsi hdd=ide-cd" in lilo.conf

In rc.modules:

/sbin/modprobe ide-scsi
/sbin/modprobe ide-cd

Gives this in dmesg:

SCSI subsystem driver Revision: 1.00
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
   Vendor: HP        Model: CD-Writer+ 9100   Rev: 1.0c
   Type:   CD-ROM                             ANSI SCSI revision: 02
hdd: ATAPI 40X DVD-ROM drive, 256kB Cache, UDMA(33)

I don't actually know if the hdd=ide-cd does anything for the ide-cd
module, other than keep the ide-scsi module from grabbing it. 
Conversely, the ide-cd module only grabs hdd even when the ide-scsi
module is not loaded (making hdc free).  So it appears to do something.

As it turns out, the latest version of cdrtools (2.0) supports ATAPI 
drives directly.  I tested this by burning an ISO, reading it back, and 
comparing the md5sums.  So the whole ide-scsi exersice looks to be
academic at this point.

Have fun,

Andy Johnson


  parent reply	other threads:[~2003-01-05  8:20 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <fa.ft06krv.t2sv1p@ifi.uio.no>
     [not found] ` <fa.g96qm0v.1q1m9id@ifi.uio.no>
2003-01-05  4:52   ` IDE-SCSI grabs too many drives Andrew S. Johnson
2003-01-05  8:28   ` Andrew S. Johnson [this message]
2003-01-04  8:21 Andrew S. Johnson
2003-01-05  0:15 ` J.A. Magallon

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