Linux Administration Bootcamp: Go from Beginner to Advanced - The Linux Boot Process

This video tutorial covers the Linux boot process, starting with the BIOS, which performs hardware checks and loads the boot loader. It explains the roles of GRUB and Lilo boot loaders in starting the operating system. The tutorial also discusses the initial RAM disk (initrd) and the Linux kernel, stored in the boot directory. It introduces run levels and systemd targets, explaining how to change them using systemctl. Finally, it provides instructions on using shutdown, reboot, and poweroff commands.

How can you view the messages in the kernel ring buffer?

What is the difference between run levels and targets in Linux?

What commands can be used to shut down or reboot a Linux system?