On Sun, Nov 22, 2015 at 4:56 PM, Chris Howe <[log in to unmask]> wrote:
> Hi,
>
> I've been running SL6.4 for the last few years with no issues.  The
> computer is left on all the time as it is providing weather data to a
> server.
>
> Last weekend it was shutdown normally and on powering on again it
> fails to complete the boot sequence.  It displays the splash screen
> with Scientific Linux and the 'circle', the circle fills in and then
> disappears followed by nothing else happening.
>
> I booted the computer using a live CD (Puppy) and can mount the root
> LV but not home.  Looking at /var/messages shows the boot log for the
> previous successful boot in September and the successful shutdown.
>
> Any ideas?
>
> Thanks in advance
>
> Chris

Have you run "fsck" on the partitions? And do you, by chance, have
automated updates enabled with "yum-cron" or "yum-updatesd" enabled to
do automatic kernel updates?

It can be a bit dificult to tell, especially when updating one
individual component or adding one package can introduce a whole
dependency chain, and especially with third-party kernels or kernel
modules. But start from there, and review /var/log/yum.log for recent
updates that might be interfering.