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

[Peter Jay Salzman]

On Thu 13 Jan 05,  3:29 PM, p <p> said:
> On Thu 13 Jan 05, 12:22 PM, Ken Herron <kherron+lugod at 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.

Pete