How to install two versions of ubuntu on the same disk?

Question

System administration

Good afternoon. Now I have the only system on the disk - ubuntu 18. I want to split the disk in half and install ubuntu 16 so that when I start the computer I can choose which one to boot from. What is the easiest way to do this?

Answer 1

https://www.garron.me/en/linux/dual-boot-two-linux...