Ubuntu upgrade from 17.04 to 18.04

Question

I've installed ubuntu 17.04 and I want to upgrade it to 18.04. When I tried to do:

 sudo do-release-upgrade

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. 

Answer 1

This was not properly explained anywhere, here is what you need to do (or how I did it):

Upgrade to 17.04 to 17.10: Unable to upgrade from ubuntu 17.04 to 17.10

sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak #to be safe
sudo sed -i -re 's/old-releases.ubuntu.com/archive.ubuntu.com/g' /etc/apt/sources.list
sudo sed -i -re 's/zesty/artful/g' /etc/apt/sources.list
sudo apt update
sudo apt dist-upgrade
sudo apt autoremove

(Links says to use aptitude instead of apt-get)

Upgrade from 17.10 to 18.04: EOLUpgrades

Replace everything in /etc/apt/sources.list with this:

## EOL upgrade sources.list
# Required
deb http://old-releases.ubuntu.com/ubuntu/ artful main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ artful-updates main restricted universe multiverse
deb http://old-releases.ubuntu.com/ubuntu/ artful-security main restricted universe multiverse

# Optional
#deb http://old-releases.ubuntu.com/ubuntu/ artful-backports main restricted universe multiverse

Then run the upgrade:

apt-get update
apt-get dist-upgrade
do-release-upgrade

Do what it says when asked and wait for it to finish and you should be done.

 

EDIT

According to WiMantis, sudo sed -i -re 's/old-releases.ubuntu.com/archive.ubuntu.com/g' /etc/apt/sources.list is no longer needed. WiMantis made a post about it. Relevent part:

# Upgrade from 17.04 to 17.10

# backup current sources file (just in case)
sudo cp /etc/apt/sources.list /etc/apt/sources.list.bak

# change version codename from 'zesty' to 'artful'
sudo sed -i -re 's/zesty/artful/g' /etc/apt/sources.list

# 17.10 has reached it's end of life
# so we fetch from 'old-releases.ubuntu.com'
sudo sed -i -re 's/archive.ubuntu.com/old-releases.ubuntu.com/g' /etc/apt/sources.list

sudo apt update
sudo apt dist-upgrade
sudo apt autoremove

 

# Upgrade from 17.10 to 18.04 LTS

# change version codename from 'artful' to 'bionic'
sudo sed -i -re 's/artful/bionic/g' /etc/apt/sources.list

# 18.04 has NOT reached it's end of life yet (due in 2028)
# so we fetch from 'archive.ubuntu.com'
sudo sed -i -re 's/old-releases.ubuntu.com/archive.ubuntu.com/g' /etc/apt/sources.list

sudo apt update
sudo apt dist-upgrade
sudo apt autoremove