[CentOS] how can i upgrade my Centos from 4 to 5.1

Mon Jan 7 09:08:12 UTC 2008
Robert Slade <centos at likley.co.uk>

John R Pierce wrote:
> Tolun ARDAHANLI wrote:
>> Hi;
>>
>> How can I upgrade my Centos from 4 to 5.1?
>
> make full backups of all your system volumes (/, /var, and so forth if 
> you have them as seperate volumes), shutdown and boot the CentOS 5.x 
> CD, run an upgrade.
>
> this will probably work if your system is quite stock and you've not 
> installed any non-centos4 stuff on it.    if you've got a mess of 
> stuff from non-RPM sources and/or nonstandard repositories, chances 
> are you''ll either spend about 60 hours picking through the pieces 
> trying to get it all sorted out, or you'll end up restoring your backups.
>
>
> Personally, I recommend clean installs.   backup your user stuff, 
> config files, etc, then wipe and rebuild the system scratch, referring 
> to the previous configs and stuff for reference.
>
> YMMV.
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I tried to 'upgrade' but ran into a number of problems some of which I 
still have not resolved - Messages and boot log not being written to for 
a start.

I would strongly recommend backing up the data etc and doing a 
reinstall  - I have spent more time fixing problems than the time to 
reconfig.

Rob