Linuxroot permissions and 3d Effects

Linux Root permission and 3d effect-Linux general technology-Linux technology and application information. For more information, see the following section. Dear heroes, the younger brother has just installed ylmf os3.0, which is installed using wubi. (1) but the root user is not displayed in the command line after entering, in addition, when using the su command, the system prompts that the password of the root user is incorrect, but I only have a password. I used to use ubuntu 10.04, but there is a root terminal in it, you can go in directly. Now ylmf OS does not have the root terminal. What should I do? Some things require the root permission. Please give us some guidance. (2) another reason is that when I try the 3d effect, the background of the cube changes to the original format every time I start the system, and I have to reset the settings. Please check out what is going on. (3) in addition, how can we minimize the window display in 3d effects and only display the combustion effect without displaying other effects such as paper airplanes?