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Re: Boot fails after change of motherboard (using LVM)



On Thu, 2006-10-12 at 22:02 -0400, Volker Englisch wrote:
> On 10/12/2006 12:14 PM Rob Andrews wrote:
> > On 12-Oct-2006 17:15.19 (BST), Jeff Voskamp wrote:
> >  > Boot the machine with the rescue CD, and get the postinstall and 
> >  > preuninstall scripts using " rpm -q kernel --scripts".
> >  > Rerun them (preuninstall first) and you'll have a shiny new initrd which 
> >  > should do the trick.
> > 
> > You can get the same effect with the mkinitrd(8) tool.
> > 
> > mkinitrd /boot/initrd-<version> <version>
> > 
> > (where version is, for example, 2.6.18-1.2759.fc6)
> 
> 
> This sounded like a great idea and I had hoped it to solve my problem. 
> Unfortunately it didn't work and I am still getting the same error 
> message after restarting the system
>      Red Hat nash version 4.2.15 starting
>       Reading all physical volumes. This may take a while ...
>       No volume groups found
>       Unable to find volume group "VolGroup00"
> 
> Is there anything else I could possibly try?

When the system boots, is it actually detecting the presence of the hard
disks?

Can you tell which sata controller module is loaded when the rescue disk
is booted? (run lsmod and look for anything with sata in it)

Once you've found the sata modules in use, edit the /etc/modprobe.conf
of the installed system to ensure that it has a scsi_hostadapter line
for each sata module. For instance, I have:

alias scsi_hostadapter sata_sil24
alias scsi_hostadapter1 sata_nv

Once you have that, try making a new initrd again.

Paul.





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