Inplace upgrade from RHEL 5.x to RHEL 6.x
Recently I contacted RH for in-place upgrade from RHEL 5 to RHEL 6 and got the standard reply from RH that this kind of upgrade is not supported.
I pressed for any document that gives steps carried out when the “upgradeall” option is selected while upgrading from RHEL 5 to RHEL 6 but got the same reply, saying in-place upgrade is not supported across major releases.
Below is the list of steps I followed to get in-place upgrade...
