[CentOS] Old CentOS 6.3 grub.conf

Wed Jul 28 12:33:47 UTC 2021
Jerry Geis <jerry.geis at gmail.com>

I am trying to "add" an entry to grub.conf on CentOS 6.3 - and change the
default=0 to default=1

# grub.conf generated by anaconda
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:  You do not have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /, eg.
#          root (hd0,0)
#          kernel /boot/vmlinuz-version ro root=/dev/sda1
#          initrd /boot/initrd-[generic-]version.img
title CentOS (2.6.32-279.el6.x86_64)
      root (hd0,0)
      kernel /boot/vmlinuz-2.6.32-279.el6.x86_64 ro
root=UUID=09337d96-de39-43f1-99c2-8a6a1fadd465 rd_NO_LUKS rd_NO_LVM
LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 crashkernel=auto
 KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet
    initrd /boot/initramfs-2.6.32-279.el6.x86_64.img
title Boot Other
    root (hd0,0)
    kernel /boot/vmlinuz
    initrd /boot/initrd

I then run "grub-install /dev/sda" and reboot.  If I cursor down - my new
title is present - but the default is still the first title.

What did I miss ?