On Fri, 16 Jan 2009, Alain PORTAL wrote: > Le vendredi 16 janvier 2009, Les Mikesell a écrit : >> Alain PORTAL wrote: >>> >>> Are you really sure about that? >> >> It has worked for every CentOS X.Y -> X.Y+1 so far (at least since 3.0 >> which was the first I tried). They do tend to be big updates, though. >> Don't confuse it with an X.Y -> X+1.0 upgrade which can have much bigger >> changes. > > No confusion for me. > I understood that upgrading X.Y -> X+1.0 is a bad idea I don't think it is a bad idea. I just think that sometimes there are some problems, or RedHat is not prepared to say that it will work. CentOS 3 -> 4 worked for me, using 'upgradeany' option to anaconda.