Upgrade CentOS 4.4 to 4.8

Question

I'm new to CentOS, have mainly worked with FreeBSD.

How do i update/upgrade CentOS from version 4.4 to 4.8 ?

Update

# yum upgrade

Will this upgrade only minor or will it upgrade to 5.x ?

Answer 1

Upgrading from 4.4 to 4.8 is a minor upgrade, and this should be fairly straight forward to do just by using yum, as a matter of fact with the default yum repos that come with your CentOS distribution it should just work out of the box doing yum upgrade

Upgrading from 4.4 to 5.x is a bit more of a difficult task though, for the brave souls ;) just make sure to practice it with a box that you don't really need before starting this kind of upgrade on live boxes.

Answer 2

http://wiki.centos.org/HowTos/MigrationGuide/ServerCD_4.4_to_5 try above link :)

or if you have 4.8 DVD then following

Create a dvd.repo text file in /etc/yum.repos.d/ with the following content:

[dvd]
mediaid=1170972069.396645*
name=DVD for RHEL5
baseurl=file:///media/RHEL_5%20i386%20DVD/Server (For example for RHEL 5.5 version baseurl line should look like 'baseurl=file:///media/RHEL_5.5%20i386%20DVD/Serverenabled=1')
gpgcheck=0

For Red Hat Enterprise Linux 4.8
In /etc/sysconfig/rhn/sources, comment out the following line:
#up2date default

This line needs to be commented out otherwise up2date will keep on looking for information using the Red Hat Network first.

Next, in the same file, create a line like the following:

dir mydvdrepo /media/cdrom/RedHat/RPMS