The bootloader is the first software program that executes when the system starts, and it’s in control until it passes it to the kernel, which brings up the rest of the operating system. The GRUB bootloader in RHEL is highly configurable. In this hands-on lab, we will work with the system bootloader on RHEL 8.
Successfully complete this lab by achieving the following learning objectives:
- Modify the System Bootloader
- Query the GRUB configuration files.
- Alter GRUB configuration options.
- Regenerate and install GRUB with the updates.
- Reboot and query the GRUB configuration.
- Set and Test Default Kernel Options
- Query the installed kernels.
- Query and change the default kernel (index).
- Reboot and test configuration.
- Restore the original default kernel.