[CentOS] Re: "yum update" did not update kernel on one box

Michael Simpson wrote:

do you have any mention of the new kernel in /etc/grub.conf?

you might find that the default kernel is still the original one in which case there would be a line like default=1 in grub.conf changing this to default=0 might bring up the new kernel on reboot i have an old dual processor box that boots from the previous kernel after updates for some reason which i haven't researched

That's probably because your /etc/sysconfig/kernel contains:

# UPDATEDEFAULT specifies if new-kernel-pkg should make # new kernels the default UPDATEDEFAULT=no

Make the obvious change of "no" to "yes" if you want newly updated kernels to become the boot default.