Re: suddenly boot problems - unable to mount root FS
hi christoph and thanks for your response! my answers between your lines ...
Hi Jens,
Am 11.07.2008 um 20:12 schrieb W4/Webmaster:
hi,
a server which was running for two years now without any problems
doesn't boot anymore after energy-problem. crashed down, because usv
was defekt.
first i thought, the harddisk is bad. starting the server with a
live-cd (knoppix) works. fsck of the two partitions hda1 (root) and
hda3 (data) said clean.
i i try to boot the system, i get the following error:
Kernel panic - not syncing : VFS: unable to mount root FS on
unknown-block (3,1)
Looks like the bootloader is misconfigured.
i dont think so. it looks pretty good and nothing changed!
To fix, just boot from Live-CD, mount the disk, chroot into it and check
the bootloader's settings.
yes, i did. no changes since installation and no changes since fallout.
Or, at a boot command line, add root=/dev/hda1 to the parameters, or in
grub: root (hd0,0).
i did both things you proposed. no changes, same error message when booting!
startscripts in /etc/rc... can not be executed.
Do you mean you can't run them when booting from cd?
yes, it works! but only if i boot from cd and mount manually this two
partitions. i dpnt know for sure - but in my opinon it tries to start
this from cd/dvd. and there is not the root fs!? :(
the harddrive is the master on the first ide - channel. dvd-drive is
master at the second ide-channel. ide-drivers are built in the kernel
(no module).
in my opinion, the system tries to start from the dvd-drive -> (3,1).
so i thought, i am very clever and changed hdd and dvd. if i try to
boot with the devices changed, i get the folowing error ->
Kernel panic - not syncing : VFS: unable to mount root FS on
unknown-block (0,0)
I'm not so sure what these numbers really mean: why did it change to
(0,0) and not (0,1), when it was (3,1) in the first place?
i really dont know! thats one of the questions - but the only sensefull
response for me ;) i think - but i dont know for sure. maybe here is
anybody who can explain?!
nice, it tries to start again from / on dvd. we didn't change anything
on this machine. no updates, installations, ... it is just running in
an intranet as a local server.
is here anybody who can help me or has any idea how to get this system
wirking again? by the way - it is debian sarge.
thx for any idea and/or hint for a solution!
jens
Hope that helps a bit.
thank you for your response, chris. but sorry, i tried all of your ideas
and nothing did help!
so guys ... further ... if anybody has an idea - please let me know! ;)
cheers
jens
Best regards,
Christof Glaser
--
W4/Webmaster
webmaster@w-4.de
http://www.w-4.de
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