RE: kernel panic (maybe a stupid question)

[<A Fadyushin it-centre ru>]

It seems that the non-SMP kernel could not find the root device. The non-SMP kernel expects to fine the partition with the LABEL '/' and use as the root. However, probably you do not have such a partition. The SMP kernel may have the root partition defined by its device name (such as /dev/hda1) and, therefore, finds it regardless of that partition's LABEL. The name (or LABEL) of root device if passed to the kernel by the bootloader (such as grub) during the boot process.
I think that there are different definitions for the root filesystem in the bootloader configuration file (such as grub.conf) for the SMP and non-SMP kernels. Check the bootloader configuration for non-SMP kernel and set root devioce to the same value as for SMP kernel. Also, you should check filesystem LABELs and set the label for root filesystem to '/'.

Alexey  Fadyushin.
Brainbench MVP for Linux.
http://www.brainbench.com

> -----Original Message-----
> From: redhat-install-list-bounces redhat com [mailto:redhat-install-list-
> bounces redhat com] On Behalf Of bigodines -
> Sent: Wednesday, November 30, 2005 5:45 PM
> To: Redhat-install-list redhat com
> Subject: kernel panic (maybe a stupid question)
> 
> Hi guys!
> 
> I was running RH Enterprive v3 and I then I tried to
> migrate to the version 4. Ok, I'm not a linux expert
> (I'm just a regular desktop user that just started
> with this server stuff). Instalation went well, no
> errors at all. So, after reboot, I still have two
> options to choose (one is the kernel with SMP and the
> other is the 'regular' kernel).
> 
> If I choose the kernel with SMP, the system works OK
> (well I didn't tested everything, but at least it
> starts and give me no errors)
> 
> If I try to enter using the kernel withou smp, I've
> something like:
> 
> "Creating root device
> mkrootdev: label / not found
> mount: error 2 mounting ext3
> mount: error 2 mounting none"
> 
> Probably this is a totally newbie question... but I
> really don't know what to do to fix this problem.
> 
> BTW: Before this try to upgrade, everything was
> working well.
> 
> Best Regards,
> Matheus
> 
> bigodines
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