Linux Tutorial: Set the GRUB menu Password

Linux Tutorial: Set the GRUB menu Password

OS: RHEL6.4-64

By default, after the operating system is started, press any key to go To the GRUB menu editing page.

To set a password for the GRUB menu, modify the/etc/grub. conf file (/boot/grub. conf)

Perform md5 encryption for the password to be used to obtain the encrypted string

[Root @ rhel64 ~] # Grub-md5-crypt

View configuration files

[Root @ rhel64 ~] # Cat/etc/grub. conf

Write the encrypted password string to the configuration file/etc/grub. conf.

Add encrypted information between hiddenmenu and title

Passwd -- md5 encrypted string

[Root @ rhel64 ~] # Cp/etc/grub. conf/etc/grub. conf. bak

[Root @ rhel64 ~] # Vi/etc/grub. conf

When you enter the CRUB menu of the operating system again after the restart, the e/a/c option is not displayed. Instead, you are prompted to press p to enter the password.

Press p to enter the GRUB Password

Press enter to enter and display the original menu

If you want to enter single-user mode, you can press the letter and add the Kernel Parameter 1 or single to crack the root user password.

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