Re: Grub and linux-source-2.6.12

[mikepolniak <mikpolniak@adelphia.net>]

On 08:58 Wed 26 Oct     , Sebastian Canagaratna wrote:
> Hi:
> 
>   I tried to upgrade to kernel 2.6.12 using linux-source-2.6.12. I am
>   using unstable. The compilation goes fine, during which there is a
>   message: Root device is (3,2)
> 
>   I have my root partition in /dev/hda2. In the menu.lst for grub
>   I have:
> 
>   root (hd0,1)
>   kernel /boot/vmlinuz-2.6.12 root=/dev/hda2 
> 
> 
>   This is the same for the other kernels I have been using previously:
>   2.4.27-2-686; 2.6.11 etc.
> 
>   Now, however, when I boot up, there is a kernel panic, with the
>   message Unable to mount root fs on unknown-block (3,2).
> 
>   I tried:
> 
>   rdev /boot/vmlinuz-2.6.12 /dev/hda2
> 
>   and then tried to boot up, but I had the same problem. I do not have
>   an initrd.img; The other two 2.6 kernels I used had an initrd.img, but
>   they were precompiled kernels. Are the new kernels supposed to work
>   only with an initrd.img or am I make some other mistake.
> 
If you used the Debian .config to compile the new kernel its possible the
kernel is not loading a module (normally found in initrd) you need for
your ide or sata hard drive.

You could make the new kernel again with --initrd which would work just
like on the old kernels. 
Or compile the ide or sata driver you need into kernel (not as module) so 
it loads when you boot without the initrd.