Can't reboot after Debian update

[Zembower, Kevin]

Just to bring this thread to a close, I tried a bunch of things, trying
to boot from the old kernel, but had no success. I could boot it under
Knoppix 5.1 and it saw all the disks and partitions fine. I decided to
boot it normally one last time, thinking it would stop at the same
error, and walked away from it in our server room, and went back to my
desk to write more emails asking for further help.

Imagine my surprise when I started getting diagnostic emails from this
host. I went back into the server room, where I discovered that this
host had fixed itself and booted successfully. Wow, this Dell hardware
is something else.

This is the same host that I wrote about previously in
http://lists.us.dell.com/pipermail/linux-poweredge/2008-May/036318.html.
It reports a +5v backplane voltage below threshold four or more times a
day. I'm guessing I just booted it the last time when it was above the
threshold and it worked. This host has worked with this condition since
May, but I don't think I'm going to be rebooting it any time soon.

Thanks for the help and suggestions.

-Kevin

-----Original Message-----
From: Danny Butroyd [mailto:danny.butroyd at bigmouthmedia.com] 
Sent: Tuesday, July 29, 2008 10:57 AM
To: Zembower, Kevin
Cc: linux-poweredge at lists.us.dell.com
Subject: Re: Can't reboot after Debian update

Zembower, Kevin wrote:
> I'm hoping someone here can help me with this urgent problem. I just
> applied the updates that became available in the last couple days to
my
> Debian etch host running on a Dell PowerEdge 2450 server. This
included
> an update to the kernel, so I rebooted the host. The host failed to
> restart. The first error message on the console was '/init /init
cannot
> open /dev/root no such device.' Just before that, it said "mounting
root
> file system. Running /scripts/local-top." It finally ended by dropping
> me into BusyBox, with which I'm not familiar.
>
> There were no earlier indications of problems with the output to the
> console. All the output concerning /dev/sda, where all my directories
> are partitioned, seemed normal. This host uses a Dell PERC 3/Si card
to
> provide RAID-5.
>
> Can anyone help me correct this problem? Any suggestions of commands
to
> run in BusyBox to either fix or diagnose this?
>   
Does booting the old kernel work?  It should be in the list!

Danny
> Thanks in advance for your help, advice and suggestions.
>
> -Kevin
>
> Kevin Zembower
> Internet Services Group manager
> Center for Communication Programs
> Bloomberg School of Public Health
> Johns Hopkins University
> 111 Market Place, Suite 310
> Baltimore, Maryland  21202
> 410-659-6139 
>
>
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