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Capture The Flag
Understanding the Boot Process
COURSE LESSON
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Sign in View courseThis lecture explains how a modern computer boots from power-on to operating system load. You'll explore the POST, BIOS/UEFI, bootloader, and kernel initialization—critical knowledge for understanding system behavior and locating boot-time artifacts.
Key topics:
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BIOS vs UEFI differences and implications
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POST (Power-On Self-Test) operations
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Bootloader (GRUB, Windows Boot Manager)
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How OS images are loaded
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What can go wrong (malware, bootkits, altered boot config)