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How to reset/break the root password on Redhat enterprise Linux 7/CentOS 7/Linux OS

This Video will help you to reset/break the root password on Redhat enterprise Linux 7 /CentOS 7 /Linux OS(If you have lost it).Here You will see that how we can recover the lost root password on RHEL 7:
1. Reboot the system .
2. In the grub menu,Edit the grub menu by pressing “e” .
3.Press the arrow keys to get the “linux16” line and press “end” key. This will take you to the end of the line. Here add ” rd.break console=tty1 ” like below. Press control-x to boot the system.
4.You will get the “switch-root” prompt like below.
5.switch_root:/# mount -o remount,rw /sysroot
6.switch_root:/# chroot /sysroot
7.Set the new root password. (please update the CMDB immediately !)
sh-4.2# passwd root
New password:
Retype new password:
passwd:all authentication tokens updated successfully.
8.sh-4.2# touch /.autorelabel
9.sh-4.2# exit
10.switch_root:/# reboot
11. once the system is rebooted, you will be able to login with new root password which you have set it .

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