cdrecord question

Gregory Nowak gnowak1 at uic.edu
Mon May 6 16:22:13 EDT 2002


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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