Download Ubuntu mini.iso
2. Create a bootable media from the image file mini.iso.
You can use the utility Etcher is a GUI tool to create bootable USB of Linux, Windows or Mac. Or you can use the dd command or bootiso to create a bootable USB drive from the command line.
3. Install Ubuntu 18.04 using the image mini.iso.
Start the installation from a bootable USB drive (select Install) and follow the instructions on the screen:
Use the TAB key to navigate in text installer and Space key if you need to select/to set the flags.
When you go into Software selection Prestel, do not select any software from the list. Instead, press TAB to select Continue:
For some reason Unity is not specified in the software selection on the screen (unlike other desktop environments such as MATE Desktop, desktop with Ubuntu Studio, Kubuntu, etc.), So we have to install it later.
4. Restart the computer, remove the installation media and boot into a newly installed Ubuntu 18.04 and enter the command line.
After installation is complete, reboot the system, remove the installation media, and you will be provided a TTY (terminal), as in the screenshot above, where you will be prompted to enter the system. Enter the user name and when prompted, the password you entered during the installation process.
5. Install full desktop Unity.
After entering the terminal, you need to install the full desktop Ubuntu Unity. To do this, type the following command:
sudo apt install ubuntu-unity-desktop
6. Restart the computer and log in to the Unity desktop.
To restart the computer, enter the following command:
After the computer restarts you will not see the prompt, and instead displays a login screen LightDM allows you to log on to the session for Ubuntu Unity:
Unity loaded for the first time, displays a list of keyboard shortcuts:
Do you like desktop environment Unity?