Re: ide-scsi with 2 drives

From: Ron Johnson (ron.l.johnson_at_cox.net)
Date: 12/30/04

  • Next message: Ron Johnson: "Re: When the thread wanders too far" 
    To: Debian-User <debian-user@lists.debian.org>
Date: Wed, 29 Dec 2004 17:28:47 -0600

    On Wed, 2004-12-29 at 12:38 -0900, Greg Madden wrote:
    > On Wednesday 29 December 2004 10:35 am, Robert Epprecht wrote:
    > > Hello
    > >
    > > Up to now I had one hd and one dvd writer and everything worked fine.
    > > Now I have added a second hd and a dvd rom drive:
    > >
    > > /dev/hda hd
    > > /dev/hdb dvd writer
    > > /dev/hdc hd
    > > /dev/hdd dvd rom
    > >
    > > A short test with another OS (no, it's debian woody ;-) without
    > > ide-scsi seems to do fine with all of them.
    > >
    > > The trouble starts when I want to use ide-scsi to burn cds or dvds.
    > > This time I boot sid (but I don't think this makes the difference)
    > > with 'hdb=ide-scsi' as kernel parameter in grub menu.lst (it's a
    > > 2.4.24 kernel). I can mount the dvd writer as /dev/scd0, but I cannot
    > > mount /dev/hdd. I tried /dev/scd1, which (to my big surprise) mounts
    > > the same drive as /dev/scd0.
    > >
    > > I have tried appending 'hdb=ide-scsi hdd=ide-scsi' as kernel
    > > parameters, and a couple of other things, but had no success yet. I
    > > must be doing something wrong...
    > >
    > > So before I post error messages of everything I tried please tell me
    > > what kernel parameters (and syntax) I should try in grub.
    > >
    > > BTW: I do not really care if /dev/hdd (the dvd rom) runs with
    > > ide-scsi or without, as long as it works.
    > >
    > > Thanks a lot for any help,
    > > Robert Epprecht.
    >
    > I have found mixing hd's & cd'd on the same IDE controller to cause
    > issues. I have even had issues with the position of the drives on the
    > ribbon cable, depending on the UDMA number of the device. I would start
    > with hd's on one cable & cd/dvd's on the other. Make sure your chipset
    > is supported by kernel. This may be old info as I have been running
    > scsi mostly.

    But then performance will take a hit.

    OP could run a 2.6 kernel and not use ide-scsi. ide-cd works fine
    for me... 

    -- 
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Ron Johnson, Jr.
Jefferson, LA USA
PGP Key ID 8834C06B I prefer encrypted mail.
"The man who has gotten everything he wants is all in favor of
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