I tried to use the update manager but it says your computer is up to date. Upgrade to 18.04 from 17.10
So I downloaded The .ISO file for Ubuntu 18.04.
Then when I boot from USB there is no option to upgrade.Only to erase for new installation and to divide partition.
do-release-upgrade -c
? https://askubuntu.com/questions/110477/how-do-i-upgrade-to-a-newer-version-of-ubuntu – Katu May 08 '18 at 13:09