[CentOS] New CD-ROM drive causes kernel panic
Louis Lagendijk
louis at lagendijk.xs4all.nl
Wed Dec 28 17:33:33 UTC 2005
On Wed, 2005-12-28 at 08:24 -0500, Alfred von Campe wrote:
> Thanks for all the responses.
>
> > You might want to first check your BIOS settings for the CDROM drive,
> > and then the data cable. I really don't think there is such a thing
> > as an incompatible CDROM, but I have seen some BIOS settings making
> > CDROM drives behave weirdly.
>
> What type of BIOS settings are you talking about? The system is
> currently up and running, so I can't easily check it (but I'll
> probably reboot it later today).
look for DMA settings for the drive. turning DMA off could help
>
> The master/slave setting is set to exactly the same setting (slave)
> as the CD-ROM drive it replaced (there is another drive on that same
> cable). And how do I change the DMA settings? I think this is what
> may be causing the problem. Linux currently doesn't recognize the
> drive, as it is disconnected. But I believe it's /dev/hdb (although
> it might be /dev/hdd). There are two hard disks at /dev/hda and /dev/
> hdc that are mirrored together and mounted as /home.
>
As this does not seem the cause of the problem, I would tend to suspect
the cable. Is the cable Ultra-DMA capable (high density 80 wires)? In
any case, replace it with anUltra-DMA capable cable
Louis
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