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2005 Jan 13 16:40

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Re: [vox-tech] Plextor PX-712A not working...
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Re: [vox-tech] Plextor PX-712A not working...



On Thursday 13 January 2005 12:32, Peter Jay Salzman wrote:
> On Thu 13 Jan 05,  3:29 PM, p <p> said:
> > On Thu 13 Jan 05, 12:22 PM, Ken Herron <kherron+lugod@fmailbox.com> said:
> > > Dylan Beaudette wrote:
> > > >The [cdrom] drive is connected to the primary IDE channel, and my hard
> > > >drive is connected to a serial IDE channel. As of kernel 2.6 my hard
> > > > drive is accessed as a SCSI device. However, my cdrom drive does not
> > > > answer to requests sent to hda,hdb,hdc,hdd ... nor to any SCSI
> > > > devices...
> > >
> > > Dylan, are you able to access both the CD and the hard drive from other
> > > operating systems or earlier Linux revisions when they're wired this
> > > way? I wonder if the motherboard has disabled the primary IDE channel
> > > because one of the serial ATA ports is in use, or maybe Linux can't
> > > drive both at the same time for some reason. Perhaps moving the CD to
> > > the secondary IDE bus would do the trick.
> >
> > Before swapping hardware, read:
> >
> >
> >    https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=136045
> >
> > which looks familiar.  As Ken states, look for IDE options in BIOS.  Make
> > sure IDE is not disabled.  If it says "legacy" try changing the option.
>
> Ignore what I said above if your CD works under Knoppix.
>
> However, what I said below is still valid:
> > Come to think of it,
> >
> >    /proc/interrupts
> >
> > should show that IRQs 14 and 15 are given to IDE0 and IDE1.  If you see
> > that IDE0 and IDE1 aren't given interrupts, then we've discovered
> > something important about your problem.
>
> If Knoppix works, you may want to grab a copy of .config from Knoppix if
> one is available (you can look in /boot, /usr/src/*, and /proc/config.gz)
> and use it to build your own custom kernel.
Starting with the 2.6 kernels CD ROM's on ide no longer use the ide-scsi 
driver They ar supposed to use native ATA methods.
Try doing cdrecord dev=ATA: -scanbus
This should give a list of devices, each identified with three numbers, much 
like the scsi
You can then use dev=ATA:x,y,z in your record command where x,y,z
corresponds to the burner as reported by cdrecord dev=ATA: -scanbus
I'm running a 2.6.8 kernel with a cheap ide CD burner and it works fine.
Richard Harke
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