Reset the root user password in centos7

Reset the root user password in centos7
1. When the system is started and then prompted, press the Space key to stop the system on the selection page. 2. then press e to go to the option editing page. Option editing page: 3. then add "rw init =/bin/bash" after the Lang = \ en_us.UTF-8, and delete the rhgb quiet, as shown in the final figure. After the modification, press "ctrl + x" to start note: the "\" behind the UTF-8 at the yellow horizontal line is not required. 4. As shown in Figure 5. Enter the "passwd" command to set the password of the root user, as shown in
6. Run the following commands: "touch/. autorelabel" and "exec/sbin/init"