[SOLVED] Archlinux does not boot any more after update

Hi all,
yesterday I decided to update my Archlinux system again after postponing the updates for some weeks.
In general I update anything except kernel stuff, but this did lead to some dependency problems recently,
so I decided to make a full upgrade now via pacman.
After restarting the system, the kernel refused to boot. It told me, that it couldn't find my root partition /dev/sdc1 and left
me in an almost useless recovery shell. The error was:
ERROR: Unable to determine major/minor number of root device /dev/sdc1
Has anyone an idea, what might have happened? I had to install Ubuntu into a free partition to post this
topic. The disks and partitions are okay, I managed to "boot" using the old kernel, but of course the system
remained useless in that case due to wrong kernel module versions.
Thanks in advance for any hint, how to proceed.
Cheers, Zmann
Last edited by Zmann (2012-06-02 20:56:39)

Hi all,
thanks for the quick replies and sorry for the delay (children prioritized :-)
Yes, I'm using an older SATA controller (more or less 6 years), so the problem might be related to what you posted.
I was not able to boot the old fallback kernel, same error message. The fallback kernel simply uses a different initrd
file, perhaps I should think about a more sophisticated approach.
Nevertheless I already checked the file /etc/mkinitcpio.conf and it did not contain a hook called autodetect. So maybe
the mkinitcpio won't help anyway? Should I prefer using the suggested LTS kernel instead? I assume, this is done by booting
using an archlinux CD, then chroot and using pacman? Maybe it's sufficient to chroot from the currently running ubuntu instead?
Or will the booted kernel have any influence to mkinitcpio or the like?
Cheers, Zmann

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[SOLVED] Archlinux does not boot any more after update

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