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RHEL 7 / CentOS 7 / Grub2 : Protect Single User Mode / Rescue / Emergency with Password

As we all know Red Hat Enterprise Linux 7 and CentOS 7 Linux is out now, Recently I have posted How to enter into Single User Mode / Rescue / Emergency Mode on RHEL 7 / CentOS 7.

This post is to Secure Single User Mode / Rescue Mode / Emergency mode on RHEL 7 / CentOS 7 in Grub2, By performing this Article you will able to secure your Grub2 Edits with Username and Password, It is always a good idea to protect your Grub2.