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. > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos 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