Boot Process and GRUB

HardSecurity & Infrastructure00:00

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Problem

Linux boot process, what is grub? Windows boot process,

Explain the boot sequence for a Linux system and a Windows system, starting at firmware and ending with the operating system initialization. Define GRUB, distinguish BIOS and UEFI paths, and describe the security role of Secure Boot.

Trace the major Linux boot stages and identify GRUB's responsibilities.
Trace the corresponding Windows boot stages, including BCD, Windows Boot Manager, and winload.efi.
Compare one boot failure and one boot-tampering scenario for each operating system.