Ubuntu 20.04 upgrade from older versions

Η διανομή Ubuntu 20.04 κυκλοφόρησε χθες και ίσως θέλετε να αναβαθμίσετε παλαιότερες εκδόσεις του λειτουργικού της (19.10 ή 19.04). Ναι ξέρω ότι πολλοί διαχειριστές θεωρούν ότι κανένα λειτουργικό σύστημα δεν είναι τόσο καλό όσο αυτό που έχει εγκατασταθεί από την αρχή.

For this reason, you may prefer to install Ubuntu 20.04 from the beginning instead of doing an upgrade.

However, it can te already any of the current versions 18.04, 19.04 or 19.10 that you will want to keep as is but upgrade.

The following post will guide you through the process of upgrading older versions of the distribution to the latest LTS version, 20.04.

Note: It's rare for an Ubuntu upgrade to go wrong. However, it can happen. So before we start it would be good to create of all your data and settings on your computer.

How to update and upgrade

The first thing you need to do is upgrade your existing system.

To do this, open a terminal and give the following commands:

sudo Update
sudo apt-get upgrade -y

Once done, reboot the machine (if the ), log back in and get ready to continue.

Install Ubuntu Update Manager

The update-manager-core is responsible for managing upgrades. Hypothetically it is already installed on your system. To be sure, give the following command:

sudo apt-get install update-manager-core -y

How to upgrade

Give the order:

sudo do-release-upgrade

The upgrade process will begin. If the command says that no new version is available and you still want to go ahead with the upgrade, you can use it -D:

sudo do-release-upgrade -d

You will be asked if you want to continue with the upgrade
Ubuntu 20
Are you sure you want to continue?

Type y and press Enter on your keyboard to start the process. You will be asked if you want to restart the services during the package upgrades without being asked. Click Yes and press Enter on your keyboard.

Ubuntu 20

Depending on the software you have installed on your server, you may be asked if you want to keep the current versions or if you want new versions

Ubuntu 20

Think before you choose. If you have a custom application installed, you need to make sure that you maintain the existing version. If you are not concerned, choose to install the package manager version.

Finally you will be asked if you want to keep or remove old packages. It would be good not to keep them.

Reboot to complete the upgrade process.

It will take some time – hours even. If the hardware and the Dia you are quite fast, the upgrade can be done in less than 30 minutes. If your network connection is slow, this time can be significantly extended. When the process is complete, you will need to do a reboot.

After rebooting, log in again and enjoy Ubuntu 20.04 Focal Fossa.

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Written by giorgos

George still wonders what he's doing here ...

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