Hello?

During CentOS 5 booting and shutting down process,
I receive the following errors:

starting:
applying intel microcode [failed]

shutting down:
stopping anacron [failed]

How can I clear these errors?

Thanks.

The one that fails on stop (anacron) may be "failing" because it wasn't started in the first place.

The one that fails on start (intel microcode) may be "failing" because it isn't relevant to your hardware (e.g. your running AMD or some Intel chip this wasn't designed for.)

Start/Stop scripts are based in /etc/init.d.

Just go there and look for the message you're seeing:

e.g.
grep "stopping anacron" *

That should give you the name of the file (probably anacron in that case). You can then look for the file start/stop in the run level directories (/etc/rc?.d where ? is the run level) by doing:
ls -l /etc/rc?.d/*file*
That should shown you files of the form:
S##file
K##file
Where the S is a start file and the K is a stop (kill) file, the ## is a sequence number and file is the same as that seen in init.d. These are typically links back to the file in init.d.

If you don't see an S##file for the anacron then you know it isn't being started so there is no need to stop it. You can simply remove the link for the K##file to prevent the stop attempt. (You may be able use chkconfig for this as well - see "man chkconfig".)

For the one that is failing on startup you can examine the file to see what it does. You can even try running it from command line to see if it gives any errors:

/etc/init.d/file start (or service file start).
You can then either try to fix whatever is causing it to fail OR you can remove the S##file so it doesn't try to start in the first place.