centos7 crack the root password

First start the system e-letter on the keyboard interface in the kernel

By e

Enter the following interface, the line find linux16 press the end key on the keyboard cursor to the end of the line to add rd.break console = tty0, do not press enter, under press ctrl + x

Then look into the interface to embark on the icon to the operation
step by step input to

restart the system to enter a new password success