cdrecord question

Mon May 6 16:43:33 EDT 2002

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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> > > > > >
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