The Wiki page "SDB:System upgrade" (https://en.opensuse.org/SDB:System_upgrade) warns Warning: Do not skip a release when upgrading! Example: do not upgrade from 13.1 to 42.1. Instead, from 13.1 upgrade to 13.2, then from 13.2 upgrade to 42.1. Other possibility: Offline upgrade, a.k.a. traditional or DVD upgrade. For more information, read offline upgrade. This upgrade method is safer and more versatile. Unless you have a good reason to do otherwise, use the offline upgrade method. Especially this disadvantage of Zypper system upgrade makes my sceptical: It does not do all of the cleanup and maintenance that an offline DVD Upgrade does. Does this still apply for the upgrade from 13.2 to Leap 42.1? Which method works better in practice? (Personally I use both methods. I prefer Offline upgrade (from USB) for PCs with a limited number of packages and less extra repositories. I prefer the Zypper system upgrade method for PCs will much packages from different repositories. Zypper system upgrade also causes less downtime.) Greetings, Björn -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org