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SubjectRe: [Linux 2.4.32] SATA ICH5/PIIX and Combined mode
On Wed, Dec 21, 2005 at 12:10:22PM +0100, Paul Rolland wrote:
> I have a machine with two SATA HDD, and one PATA CDRom.
> Bios is configured for combined mode, and installing a RedHat ES3
> (Kernel 2.4.21-ELsmp) is fine, the two HDD are up, the installation
> is fine and the CDRom is working.
>
> Then, upgrading to a vanilla 2.4.32, the ata_piix.c file contains
> a "combined mode not supported" and booting the machine hangs, as
> no VFS are up for root device.
>
> Of course, I can disable the Combined setup in the BIOS, then I have
> my two HDD, but no CDRom...
>
> What is the "trick" to have a 2.4.32 be able to do what a 2.4.21 was
> doing ?

Apply all the Red Hat-specific patches that you ditched, when you
switched to a vanilla kernel... The patch that supported combined
mode for you is in there.

Jeff



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