Nico Kadel-Garcia <[log in to unmask]> wrote:

> 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.

I have checked the disc with e2fsck and it reports 'clean', will 
investigate the yum log next.  Slightly more worryingly the disk is 
now making unhealthy sounding noises.

Thanks for the suggestions.

Chris