Upgrade from CentOS 4.1 to 4.2
Date: 2005/10

2005.10 a large upgrade from Centos 4.1 to 4.2 was released. This
included a kernel release. My notes on the upgrade.


0. Intro

Updating the kernel require a bits of extra work due to:
   1. We developed our own modules (pmac.o) -> recompile & reinstall pmac.ko for new kernel.
   2. Install NVIDIA drivers for twinview support -> installation required after kernel upgrade.

Notes on upgrading from the 2.6.9-11.EL to 2.6.9-22.EL

1. Install all installed packages using yum update.

   # yum update

2. Modify /etc/inittab to not boot into X. (runlevel 3 instead of 5)
   Disable loading of pmac.ko module in /etc/rc.d/rc.local
   Modify /boot/grub/menu.lst to remove entry for smp kernel and check default=0
   Reboot. (must kill X to install graphic driver).

3. re-Install the NVIDIA driver. 
   Downloaded new driver from www.nvidia.com, version NVIDIA-Linux-x86-1.0-7676
   and stored it in
   /home/tcs3/public_html/systems/tcs3/computers/linux/0510_nvidia

   # cd /home/tcs3/public_html/systems/tcs3/computers/linux/0510_nvidia
   # sh NVIDIA-Linux-x86-1.0-7676-pkg1.run.txt

   Restore /etc/inittab to boot into X.

5. TCS

   create /dev/pmac node:
      #  mknod --mode=666 /etc/udev/devices/pmac c 66 0

  New kernel require new .ko module -> reinstall tcs3 or module in /home/to/current/.
  Restore /etc/rc.d/rc.local to load pmac.ko.
  Recompile and test tcs3 main.