2.6.16.16 Lost CD-ROM Drive

[Stephen John Smoogen]

On 2/1/07, Brian D. McGrew <brian at visionpro.com> wrote:

> On Thu, 2007-02-01 at 07:00 -0800, Brian D. McGrew wrote:
> > Hey guys-
> >
> > Have a Precision workstation with SATA hard drive and SATA CD-ROM.  If
> I
> > load Fedora Core 5 with a stock 2.6.15 kernel, life is good.
> >
> > However, I need to use 2.6.16.16.  Once I build and install this
> kernel,
> > my CD-ROM drive is gone.  There is a log entry in dmesg that says
> "ATAPI
> > not support.  Ignoring."
> >
> > If I go into the BIOS and set the SATA operations to Legacy/Compatible
> > then everything is fine.  I've rebuilt this kernel about 100 times
> > trying everything I can think of.
> >
> > When I have SATA set to legacy, the HDD and CD are detected as
> /dev/hd*
> > and when they're set to SATA Normal operation the HDD is detected as
> > /dev/sda.  If I boot my old 2.6.15 (stock install) kernel then the CD
> is
> > found as /dev/sdc.
> >
> > I've even tried taking the installation default configuration file for
> > the 2.6.15 kernel and just wholesale copying it into my 2.6.16.16
> kernel
> > and build that way but still no go.
> >
> > What am I missing to get the 2.6.16.16 kernel to see a SATA CD-ROM
> drive
> > in normal, non-legacy move?
>
> Try booting 2.6.16 with the following options:
>
> libata.atapi_enabled=1 ide0=noprobe ide1=noprobe
> -----
>
> Still no go.  /dev/sda* is created for the hard drive but no CD-ROM and
> the same ATAPI error in dmesg.
>


I would try the following:

yum update
and boot the kernel and see what modules are linked to the cdrom. I am
thinking it is the sr_mod module. I would check to see if its compiled
in the 2.6.16 code.




-- 
Stephen J Smoogen. -- CSIRT/Linux System Administrator
How far that little candle throws his beams! So shines a good deed
in a naughty world. = Shakespeare. "The Merchant of Venice"