Larry,

You can just delete the entries from grub.conf, no commands need to be 
run after that.
You also might be interested in the installonlyn (I think that is the 
name) yum plugin.  It lets you limit how many old kernels to keep installed.

Cheers,
Mark

P. Larry Nelson wrote:
> Here's what I assume to be a simple grub question....
>
> On one of my systems, /boot is getting quite full with all the
> kernel updates and I'd like to delete most of the old ones,
> keeping a couple of the most recent ones.  Does one then need
> to delete the corresponding lines for the deleted kernels in
> grub.conf?
>
> Does anything have to be done after that so grub is aware, like
> one had to do with the old lilo.conf, i.e., run lilo after any
> changes that were made?
>
> Thanks!
> - Larry


-- 
Mr. Mark V. Stodola
Digital Systems Engineer

National Electrostatics Corp.
P.O. Box 620310
Middleton, WI 53562-0310 USA
Phone: (608) 831-7600
Fax: (608) 831-9591