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

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.

In This Howto, We will protect Grub2 with Encrypted Password and Plain Password.