In this article from our series of RHCE exam guide we will learn
how to remove root password. You are new System Administrator
and from now you are going to handle the system and your main
task is Network monitoring, Backup and Restore. But you donot
know the root password. Change the root password to redhat. When
System Successfully boot, it will ask for username and password.
But you don't know the root's password. To change the root
password you need to boot the system into single user mode. You
can pass the kernel arguments from the boot loader. Reboot
system with alt + ctrl + del key combinations Press space bar on
boot loader screen This will drop you in OS selection screen
Select linux (If you have multibooting then select linux) From
grub boot loader screen select kernel parameter line and press e
This change will tell to boot system in single user mode. After
loading essential modal kernel will drop in rescue mode with
root prompt now run passwd command to reset root password and
init 5 command to ru