I've installed ubuntu 17.04 and I want to upgrade it to 18.04. When I tried to do:
I got a message saying
An upgrade from 'zesty' to 'bionic' is not supported with this tool. Need inputs to proceed on this.
sudo do-release-upgrade Checking for a new Ubuntu release Your Ubuntu release is not supported anymore. For upgrade information, please visit: http://www.ubuntu.com/releaseendoflife Get:1 Upgrade tool signature [819 B] Get:2 Upgrade tool [1,257 kB] Fetched 1,258 kB in 0s (0 B/s) authenticate 'bionic.tar.gz' against 'bionic.tar.gz.gpg' extracting 'bionic.tar.gz' Reading cache Checking package manager Can not upgrade An upgrade from 'zesty' to 'bionic' is not supported with this tool.