Chapter 5

systemd and the Boot Process

CERTIFICATION OBJECTIVES

5.01     The Boot Process

5.02     Bootloaders and GRUB 2

5.03     Between GRUB 2 and Login

5.04     Control by Target

5.05     Time Synchronization

Images     Two-Minute Drill

Q&A   Self Test

This chapter is focused on what happens from the moment a system is powered up to the time a login prompt is available. This is called the boot process. When the system powers on, the BIOS/UEFI firmware searches for a bootable device. Assuming this is a local hard drive, the GUID Partition Table (GPT) or Master Boot Record (MBR) of that device points to the GRUB 2 bootloader. Once an option to boot ...

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