How to convert CentOS 6.0 to Scientific Linux 6.x
Install the Scientific Linux 6.x yum repositories:
rpm -ivh http://ftp.scientificlinux.org/linux/scientific/6x/i386/os/Packages/yum-conf-sl6x-1-1.noarch.rpm
Install the required GPG keys:
– for i386 arch:
rpm -ivh --force http://ftp.scientificlinux.org/linux/scientific/6x/i386/os/Packages/sl-release-6.1-2.i686.rpm
OR
– for x86_64 arch:
rpm -ivh --force http://ftp.scientificlinux.org/linux/scientific/6x/x86_64/os/Packages/sl-release-6.1-2.x86_64.rpm
Update from CentOS 6.0 to Scientific Linux 6.x using yum:
yum clean all
yum update
Remove some old packages:
rpm -e centos-release
rpm -e yum-plugin-fastestmirror
Reboot and enjoy!