| Redhat 7.3, 8.0, and 9.0 upgrade to CentOS 3 using yum
The following tutorial is intructions on upgrading from just about any Red Hat release (below Fedora) to CentOS. This tutorial is specifically dealing with Red Hat 9 and CentOS 3.4.
As with any upgrade on a production server is is highly recommended to backup your data.
You will need to download and install Yum for this. You can download yum from: http://linux.duke.edu/projects/yum/download.ptml
You may also want to rebuild your RPM database:
You should update your /etc/yum.conf to look something like the following:
You may want to adjust the URLs to pickup from a mirror closest to you, mirrors are available at centos.org.
Import the GPG key for CentOS 3.4 rpms:
You will want to check if your kernel has been properly installed and added to your bootloader.
If all looks ok you can go ahead and restart your computer:
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