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Transitioning to CentOS - a Minimal Installer methodology using Grub
Question: I currently have a Linux installation, which uses grub
as its bootloader. How can I upgrade my system to Centos?
Answer: Download two files, add a stanza to one, reboot, and do a wire based
It really is that simple. The combination of
the Anaconda/Kickstart installation tool set,
and the ease of adding an additional boot image set, make getting a
minimal installer running as easy as 'one, two, three'.
One: Download vmlinuz and initrd.img from:
two files are under 5 Meg of content.
wget -O upgrade-vmlinuz \
wget -O upgrade-initrd.img \
Two: Update the grub.conf [We assume in this example that you have
an IDE hard drive; alter the root stanza to local
Three: Reboot, and select the Centos Install option.
cat - << END >> grub.conf
title Centos Install
At this point, you are running a ram based kernel which is well featured
with drivers, and able to do a kickstart based wire install; a
repository(see a sample from our note
at: PXE installation outline, or one across the general
internet are equally useable, although a local one tends to be more
We have simplified the example to use the Centos 'vault', which is a well
know and stable URL; Obviously, changing among the available architectures:
alpha i386 ia64 ppc s390 s390x x86_64 is
just a minor edit away.
Hands-off kickstart methods outline
rev 080102 RPH
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Last modified: Wed, 02 Jan 2008 12:38:40 -0500