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Re: Help with restoring IDE image to SATA drive



Les -- Comments/questions inline.

On 1/4/07, Les Mikesell <lesmikesell gmail com> wrote:
On Thu, 2007-01-04 at 13:34 -0500, FS wrote:
> Folks -- My ignorance of all things Linux might be showing with this
> posting, but I can't seem to make this work. I have a Linux FC2
> machine with an IDE drive which I'm trying to make an image of, so in
> case all hell breaks loose we have something we can restore and be up
> and running in no time.
>
> The box I tried to restore has a SATA drive. I've already imaged the
> SATA drive with the image, but it says "kernel panic".

You load the kernel with bios requests, but once it and the initrd
(ramdisk) image are loaded, the kernal has to have the correct
disk driver to continue.  You can fix it after the fact by
booting the install CD in rescue mode and doing the chroot it
suggests. Note the kernel module that gets loaded for this
machine (lsmod will show a list), and add it to /etc/modprobe.conf
(I don't have an SATA box handy but I think they look like scsi's):
alias scsi_hostadapter  xxxxx   (where xxxx is your driver module).

You say "Note the kernel module that gets loaded for this machine" I'm
assuming this is for the new SATA box. Since I can't boot into the
machine, is there any other way to gather this information? I can boot
into knoppix, mount the SATA drive and read files off of it. I can
even edit the modprobe.conf to add whatever needs to be added to it,
but what should I add?

Then run
mkinitrd -f /boot/initrd-2.4.22-1.2199.nptl.img  2.4.22-1.2199.nptl
to rebuild the image with the module you need.

This needs to be run on the new machine too? Any alternate way of
running this if the machine is not bootable?

Oh wait - with those kernel numbers, that must be an FC1.  You'll
have to edit modules.conf instead of modprobe.conf and you may
or may not even have an SATA driver available.  And you should
also edit /etc/fstab to see if any partitions (including swap) are
referenced by their /dev/hd? name and if so, change to the
new corresponding /dev/sd? name.

You are right. It is FC1. I checked the fstab file by mounting the
drive after booting in Knoppix and one entry was for hda, which I
changed to sda. If I have to edit the modules.conf, what should I use
for the module name to add and where would I get the driver file from?
When I do get that file where do I place it for the system to find?

Thank you for your patience and help!

Regards,
Faisal


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