Ubuntu root account enabling and login Problems

Ubuntu root account enabling and login problems ubuntu root users are disabled by default, You need to manually open the problem, in fact, all operations under ubuntu do not use the root user, because of the rational use of sudo, this avoids the devastating problem caused by root user misoperations (in fact, I personally think this is not necessary): perform the following operations: 1. first, unlock the root user and set the Password for the root user to open the terminal. Enter: sudo passwd password: <--- Enter your current User Password Enter new UNIX password: <--- new Root User password Retype new UNIX password: <--- repeat the new Root User password passwd: the password has been successfully updated. 2. Change the logon password, allow root login to open the system> System Management> logon window) Click the "Security" option page and select "Allow local administrator login ". 3. log out of the current user and log in as root. If you want to disable the root account again, run sudo passwd-l root. On the ubuntu Server version, the operations are the same.