Modify the System Bootloader|RHCSA Exam Questions

Introduction

As a system administrator, you may need to modify the system bootloader to customize the boot process or troubleshoot boot-related issues. In this challenge, you will learn how to modify the system bootloader on a Red Hat Enterprise Linux (RHEL) system.

Skills Graph

%%%%{init: {'theme':'neutral'}}%%%% flowchart RL linux(("`Linux`")) -.-> linux/BasicSystemCommandsGroup(["`Basic System Commands`"]) linux/BasicSystemCommandsGroup -.-> linux/echo("`Text Display`") subgraph Lab Skills linux/echo -.-> lab-389469{{"`Modify the System Bootloader`"}} end

Modify the GRUB Bootloader Configuration

Tasks

Modify the GRUB bootloader configuration to change the default kernel option.
Verify that the changes have been applied correctly.

Requirements

Modify the /etc/default/grub file to change the GRUB_DEFAULT parameter to a different kernel option.
Regenerate the GRUB configuration file using the grub2-mkconfig command.
Reboot the system and verify that the new default kernel option is selected.

Example

After modifying the GRUB configuration, the default kernel option should be changed. For example, if the original GRUB_DEFAULT value was 0, and you changed it to 2, the GRUB menu should now display the third kernel option as the default.

Summary

In this challenge, you learned how to modify the system bootloader (GRUB) configuration to change the default kernel option. This skill is essential for system administrators who need to customize the boot process or troubleshoot boot-related issues. By completing this challenge, you have demonstrated your ability to effectively manage the system bootloader on a RHEL system.

Modify the System Bootloader