THE LINUX BOOT PROCESS: FROM POWER BUTTON TO KERNEL

Summary from the TLDR InfoSec newsletter

This deep dive explains the Linux boot sequence from CPU reset through various modes, including firmware handoffs, bootloader operations, kernel decompression, and memory setup with paging. It covers mode transitions, interrupt handling, GDT and IDT configuration, and kASLR, which randomizes kernel memory locations to prevent exploits. kASLR enhances security by randomizing kernel addresses, but can be disabled with nokaslr for debugging.