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SubjectRe: How to determine the information about SATA controller
Jaswinder Singh Rajput writes:
> >  > No root device found.
> >  > Boot has failed, sleeping forever
> >  >
> >  > I am trying to determine the information about the SATA controller so
> >  > that I can choose the appropriate controller for SATA in kernel
> >  > config. I am not able to figure out the SATA information from above
> >  > dmesg and lsmod. How can I do so.
> >
> > In your working dmesg the disks are controlled by ata_piix,
> > but you've disabled CONFIG_ATA_PIIX in the config you're trying.
> > So it's not surprising that you can't boot.
> >
> > 1) re-enable CONFIG_ATA_PIIX and disable CONFIG_IDE
>
> I have enabled CONFIG_ATA_PIIX
> and disabled CONFIG_IDE
>
> but still getting same error :
>
> No root device found.
> Boot has failed, sleeping forever
>
> Am I missing some more options.
>
> > or
> > 2) go into the bios and change the option that says whether to run
> >   the ATA controller in legacy/compatible mode or enhanced/ahci mode,
> >   you want ahci mode
> >
>
> In my case, BIOS options are enhanced / legacy / disabled. I tried all
> but of no use. So I am using enhanced to boot Fedora 13 kernel.

We need to see the complete kernel messages from a failed boot to
determine the root cause of that missing root device failure.

I suggest hooking up a null-modem serial cable to a second machine
and run minicom on that one to capture boot messages, but there may
be other ways to capture boot messages: netconsole? firewire?
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