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Kernel update, system (Debian) doesn't boot anymore

Posted on 2008-10-25
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Last Modified: 2013-12-06
Kernel was 2.4.18-bf2.4, excecuted

apt-get install grub
grub-install

apt-get install linux-image-2.6.18-6-686

So far so good. When I boot however, I get stuck in a grub command prompt. What i did there was

root (hd0,0)       result from "find /boot/grub/stage1"
setup hd0
kernel /vmlinuz-2.6.18-6-686 root=/dev/hda1         (i had 2 partitions / and /home they're on an IDE disk)

initrd /initrd.img-2.6.18-6-686

So far so good, no error messages, just confirmation messages.

Now when i boot, i get a message "waiting for root file system"...and after a few minutes i fall into the busybox shell. Nothing i do there seems to have any effect.

Booting into the old kernel also doesn't work because i've no initrd of it. Can i create this in the shell ? i suppose not? Why is the root file system not working, but the vmlinuz file in /boot can be found? /boot is not a seperate partition.

How can i boot into the old kernel?
what mistakes did i make in upgrading from 2.4 to 2.6?

Does anybody have any ideas?
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Question by:Xyptilon2
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Accepted Solution

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ben-gur earned 2000 total points
ID: 22804748
Boot from the first installation CD, but instead of starting the installation type "linux rescue" to start the command prompt rescue mode.
Run chroot to set the / directory:
chroot /mnt/sysimage
See if you can install grub again:
/sbin/grub-install /dev/hda
This should have fixed the problem.

If not, boot again to "rescue mode". Execute "grub". Then install grub using this commands:
grub> device (hd0) /dev/hda1
grub> root (hd0,0)
grub> setup (hd0)
Should also work...

Here is a comprehensive guide for solving problems with grub:
http://www.linuxforums.org/forum/linux-tutorials-howtos-reference-material/6527-howto-solve-boot-problems-grub.html

Good luck,
Adam.
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LVL 13

Author Closing Comment

by:Xyptilon2
ID: 31509988
Didn't solve the problem, but i think it was unsolvable, thankfully it was a test machine that was being phased out so no harm done. Just installed a new system from scratch, thanks for the link though :)
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