[Centos] Changing booted Kernel with grub

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Hi,

I have updated the kernel to 2.4.21-27.0.2 on Centos 3.4 (was 3.3 when
I did the kernel update) and have modified grub.conf to use the single
CPU kernel:

# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:  You have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /boot/, eg.
#          root (hd0,0)
#          kernel /vmlinuz-version ro root=/dev/cciss/c0d0p6
#          initrd /initrd-version.img
#boot=/dev/cciss/c0d0
default=1
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
title CentOS (2.4.21-27.0.2.EL)
        root (hd0,0)
        kernel /vmlinuz-2.4.21-27.0.2.EL ro root=LABEL=/
        initrd /initrd-2.4.21-27.0.2.EL.img
title CentOS (2.4.21-27.0.2.ELsmp)
        root (hd0,0)
        kernel /vmlinuz-2.4.21-27.0.2.ELsmp ro root=LABEL=/
        initrd /initrd-2.4.21-27.0.2.ELsmp.img
title CentOS (2.4.21-27.0.1.EL)
.......

I then created a new symbolic link for Sytem.map in /boot to point to
System.map-2.4.21-27.0.2.EL.

When I reboot the 2.4.21-27.0.1.ELsmp is used and System.map has been
changed to point to the smp kernel.

Is there a step I'm missing out?

BTW, the upgrade from 3.3 to 3.4 using yum seems to have worked - I'm
running Oracle on the server.

Thanks,
Wayne

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