Once upon a time, Olt, Joseph <[email protected]> said:
> Tom and Chris,
> 
> I don't have the reference off hand, but I believe the recommendation of 
> reinstalling and not upgrading was from RHEL3 to RHEL4 because of the kernel 
> going from 2.4.x to 2.6.x.  It may have been in the release notes.  However, 
> it was only recommended to reinstall, it didn't say you couldn't.

http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.4/html/Installation_Guide/ch-upgrade-x86.html

24.1. Determining Whether to Upgrade or Re-Install

   Red Hat does not support upgrades from earlier major versions

   Although anaconda provides an option for upgrading from earlier major
   versions of Red Hat Enterprise Linux to Red Hat Enterprise Linux 5.4,
   Red Hat does not currently support this. More generally, Red Hat does
   not support in-place upgrades between any major versions of Red Hat
   Enterprise Linux. (A major version is denoted by a whole number
   version change. For example, Red Hat Enteprise Linux 4 and Red Hat
   Enterprise Linux 5 are both major versions of Red Hat Enterprise
   Linux.)

   In-place upgrades across major releases do not preserve all system
   settings, services or custom configurations. Consequently, Red Hat
   strongly recommends fresh installations when upgrading from one major
   version to another. 


-- 
Chris Adams <[email protected]>
Systems and Network Administrator - HiWAAY Internet Services
I don't speak for anybody but myself - that's enough trouble.

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