Ubuntu root User Password Problems

Today, we installed a Ubuntu virtual machine with a problem about the root user. During the installation process, I was not asked to set the root password, and I was prompted to enter the root password when using sudo or su. I entered the password of the first user and was rejected. The header is a little big. I installed Ubuntu again (the dual-core CPU can be installed with a virtual system while doing something else). I still didn't find any steps to set the root password. I played a clever trick and set the name of the first user to root. I actually passed the Ubuntu Virtual Machine Installed with it today and encountered a problem about the root user.

During the installation process, I was not asked to set the root password, and I was prompted to enter the root password when using sudo or su. I entered the password of the first user and was rejected. The header is a little big. I installed Ubuntu again (the dual-core CPU can be installed with a virtual system while doing something else). I still didn't find any steps to set the root password. I played a clever trick and set the name of the first user to root. I actually passed the installation steps. However, during the first login, Ubuntu prompts that the graphic system cannot be logged on as a root user! I fainted. At this time, I had no other users, and the system was white again.

I was forced to go to the Internet Room Baidu. By default, the original Ubuntu does not enable the root user. Reinstall Ubuntu according to the method found, log on to the first user, run sudo passwd root on the terminal, and set the root password. Execute su again and finally see.