General Upgrade Information An upgrade is the process of going from an earlier version of Ubuntu to a newer version of Ubuntu with an installed system. An example of this would be going from Ubuntu 17.10 to Ubuntu 18.04 LTS. To avoid damaging your running system, upgrading should only be done from one release to the next release (e.g. Ubuntu 16.04 to Ubuntu 16.10) or from one LTS release to the ne