Re: 2.6.16.16 Lost CD-ROM Drive

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On 2/1/07, Brian D. McGrew <[email protected]> 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"
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