In this section, you gained insights into:

GRUB (GRand Unified Bootloader):
Understanding the role and functionality of GRUB as a bootloader for Linux systems.

What Is GRUB?:
Exploring the definition and purpose of GRUB as a critical component in the boot process.

GRUB Versions:
Understanding the different versions of GRUB and their features.

Interactive Selections with GRUB at Boot:
Learning how to interactively select and modify boot options using GRUB during the boot process.

Installing GRUB:
Exploring the process of installing GRUB on a system, ensuring it is set up correctly.

GRUB Device Nomenclature:
Understanding the device naming conventions used by GRUB to identify drives and partitions.

GRUB Configuration Files:
Exploring the configuration files used by GRUB to determine boot options and parameters.

Boot Loader Specification Configuration (BLSCFG):
Understanding the Boot Loader Specification Configuration, a standardized format for specifying boot entries.

/boot/loader/entries:
Exploring the /boot/loader/entries directory, which contains configuration files for boot entries.