cdrecord question

[Igor Gueths]

Hi Raul. When I do demsg, it sayd cdrom: open failed. This is probably that there aren't any disks in either one of my Cd drives. Wonder if this is normal? 
----- Original Message ----- 
From: Raul A. Gallegos <raul at asmodean.net>
To: <speakup at braille.uwo.ca>
Sent: Monday, May 06, 2002 4:43 PM
Subject: Re: cdrecord question


> After your box boots up type $ dmesg |more
> 
> ----- Original Message -----
> From: "Igor Gueths" <igueths at attbi.com>
> To: <speakup at braille.uwo.ca>
> Sent: Monday, May 06, 2002 3:36 PM
> Subject: Re: cdrecord question
> 
> 
> Hi Greg. You mean the kernel hardware detection messages? Where can I find
> this output? Is it in /proc somewhere? I'll dig around for it. Also, when I
> tried using /dev/sr0 cdrecord still reports a bad file descriptor, even
> though the scsi emulation driver seems to have attached it as /dev/sr0. I
> can still use the device with no problems by specifying the coordinates,
> which is no big deal for me. I'm just wondering because it might affect me
> sometime in the future. I just don't know yet.
> ----- Original Message -----
> From: Gregory Nowak <gnowak1 at uic.edu>
> To: <speakup at braille.uwo.ca>
> Sent: Monday, May 06, 2002 4:22 PM
> Subject: Re: cdrecord question
> 
> 
> > Yes, this is perfectly normal. To find out under what device name your
> drive now is, just examine the dmesg output.
> > Greg
> >
> >
> > On Mon, May 06, 2002 at 04:02:32PM -0400, Igor Gueths wrote:
> > > Hi Greg. Well I got it to work, but it doesn't work under /dev/sr0. It
> still says bad file descriptor, but I can specify the dev by using 0,0,0 the
> device coordinates. However, when I am blanking a Cd, it just sits on last
> chance to quit, starting real write in one seconds. Is this normal to have
> it sit like that while blanking? I can hear the drive working, so its
> obviously doing something. Just asking this because I have never seen
> cdrecord working, so I'm not sure on the normal status msgs. Thanks!
> > > ----- Original Message -----
> > > From: Gregory Nowak <gnowak1 at uic.edu>
> > > To: <speakup at braille.uwo.ca>
> > > Sent: Monday, May 06, 2002 3:40 PM
> > > Subject: Re: cdrecord question
> > >
> > >
> > > > When I had a regular cd-rom drive in addition to my burner in this
> box, I didn't do scsi-emulation on it, just on my burner. However, a while
> back, Kerry said that the regular cdrom drive should also be scsi-emulated.
> So, it's your call I guess. When I had the regular cd-rom drive, the fact
> that it wasn't ide-scsi emulated didn't cause any problems for me, although
> I gathered from Kerry's posts that that may cause problems for others.
> > > > Greg
> > > >
> > > >
> > > > On Mon, May 06, 2002 at 02:56:48PM -0400, Igor Gueths wrote:
> > > > > Hi Greg. I don't have to make my regular Cdrom emulated right? I can
> just compile in atapi_cdrom support, tell the regular ide driver not to grab
> the burner, and leave the scsi cdrom support for the cd writer. Is this
> setup sort of what you are refering to?
> > > > > ----- Original Message -----
> > > > > From: Gregory Nowak <gnowak1 at uic.edu>
> > > > > To: <speakup at braille.uwo.ca>
> > > > > Sent: Sunday, May 05, 2002 8:50 PM
> > > > > Subject: Re: cdrecord question
> > > > >
> > > > >
> > > > > > Yes, your drive is ide/atapi, but you're emulating it as ide-scsi.
> This means that even though your drive is ide/atapi, your system now thinks
> that it is a scsi drive. So, you need both scsi cd-rom support, and generic
> scsi.
> > > > > > Greg
> > > > > >
> > > > > >
> > > > > > On Sun, May 05, 2002 at 08:04:51PM -0400, Igor Gueths wrote:
> > > > > > > Hi. Ide_scsi=y CONFIG_SCSI=y. I don't see why I would need Scsi
> Cdrom
> > > > > > > support, because both my Cdrom and Cdrw drives are both
> ide/atapi.
> > > > > > > According to the Cd writing howto, I had to pass hdd=ide-scsi to
> the scsi
> > > > > > > emulation driver. As a result, my Cd burner appears as a device
> in
> > > > > > > /proc/scsi/scsi. However, cdrecord says that it can't open scsi
> driver
> > > > > > > when I
> > > > > > > use /dev/sg0? I am currently only doing everything as root for
> testing
> > > > > > > purposes, then I'll deal with the users once I get it working.
> Also, does
> > > > > > > CONFIG_CHR_SG refer to generic scsi character devices, not scsi
> Cdroms?
> > > > > > > Thanks!  On Sun, 5 May 2002, Cheryl Homiak wrote:
> > > > > > >
> > > > > > > > Hi Igor.
> > > > > > > > 1. Did you also make sure that your kernel has scsi emulation,
> scsi, scsi cdrom,
> > > > > > > > and generic scsi compiled in? I think the standard kernel with
> redhat has these
> > > > > > > > compiled in, but with debian you may have to recompile your
> kernel. Don't know
> > > > > > > > about other distros?
> > > > > > > > 2. Check your permissions for sg0 or which ever generic device
> matches. I don't
> > > > > > > > remember if this was a problem for cdrecord, but it was a
> problem for some
> > > > > > > > programs that had me stumped for a while. If you can run it as
> root but not as
> > > > > > > > you, this may be the problem.
> > > > > > > > 3. there are changes you have to make in order to run cdrecord
> as a user instead
> > > > > > > > of root. I don't have them right at hand but the needed
> changes are shown in the
> > > > > > > > cdrw howto.
> > > > > > > >
> > > > > > > > You should be able to find what to use for the device by
> running cdrecord
> > > > > > > > -scanbus. For instance, when i use cdrecord, I do
> > > > > > > > dev=0,0,0
> > > > > > > > as my cdrecorder is the first such device.
> > > > > > > >
> > > > > > > >
> > > > > > > >
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