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    SubjectRe: [PATCH,RFC] make ide-scsi more selective
    I just double checked my system. Sure enough I'm using ide-scsi
    along with hdd="ide-scsi" with lilo. It grabs hdd, which is my HP-7200
    CD-RW and leaves hdc, which is my DVD alone. I've no trouble at all
    in reading or writing to hdd; no different kernel images, nothing. I
    use modules and have them normally loaded at boot time since I routinely
    use both drives to read from. My understanding was that I only needed
    the hdd="ide-scsi" in lilo to prevent ATAPI from grabbing all the drives
    it found. BTW, everything pertaining to scsi is a module on this system.

    Mike Hobgood

    On Wed, Aug 22, 2001 at 03:39:12PM -0700, Nicholas Knight wrote:
    > On Wednesday 22 August 2001 03:00 pm, Ion Badulescu wrote:
    > > On Wed, 22 Aug 2001, Nicholas Knight wrote:
    > > > Here's an end-user perspective for you... I just spent 2 days trying
    > > > to figure out how to use my CD-RW drive to read when using ide-scsi,
    > > > before I finnaly realized that I had to do it by disabling ATAPI CD
    > > > support and enabling SCSI CD support..
    > >
    > > Just doing hdX=scsi would have been enough, however. Except it doesn't
    > > work (currently) if ide-scsi is a module.
    > Could you elaborate on this? I almost never use modules for my primary
    > desktop system, SCSI emulation support and SCSI generic driver were both
    > compiled in, and I had "hdc=ide-scsi" and later also tried "hdc=scsi" and
    > I was unable to read from it with any device, /dev/sr0 /dev/sda /dev/scd0
    > were all dead-ends, but I was able to WRITE just fine... I just don't
    > want to reboot every time I want to write to the drive, nor reboot when I
    > want to READ from it.
    > Disabling ATAPI CD-ROM support, and enabling SCSI CD-ROM (along with SCSI
    > emulation support and SCSI generic support) worked, and now I just access
    > both my CD-RW drive and my DVD-ROM drive through /dev/sr0 and /dev/sr1.
    > My primary concern here is other users who haven't figured this out, I
    > know at least one ATAPI/IDE CD-R(W) in Linux HOWTO tells the user that
    > they'll have to use two seperate kernel images, one to allow reading from
    > their drive and the other for writing, infact that was my original method.
    > > I agree with Alan that the problem is the grab-on-load strategy that
    > > ide-scsi (and ide-cd for that matter) uses. I am willing to look into
    > > changing that to grab-on-open but I'm not sure if the change is an
    > > appropriate one for a stable series kernel -- it looks pretty
    > > non-trivial.
    > >
    > > Ion
    > -
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