Explanation of how I migrated to using GCC instead of OpenWatcom for the stage2 bootloader, how I finished the bootloader, and started working on the kernel. The purpose of this video is to offer better explanations for what I did in the livestreams.

Links:
- Discord channel: https://discord.gg/RgHc5XrCEw
- Source code: https://github.com/chibicitiberiu/nanobyte_os/releases/tag/Part7

Referenced videos:
- Making part 7 livestream (part 1): https://www.youtube.com/watch?v=db_5skZaneg
- Making part 7 livestream (part 2): https://www.youtube.com/watch?v=0gDzlt2eZJ4
- Setting up your OS environment (and building a cross compiler): https://www.youtube.com/watch?v=TgIdFVOV_0U
- Protected mode: https://www.youtube.com/watch?v=EBdzWFyKZ0U

Documentation:
- Why do I need a cross compiler & compiler flags: https://wiki.osdev.org/Why_do_I_need_a_Cross_Compiler%3F#Options_that_you_should_pass_to_your_Compiler
- Libgcc: https://gcc.gnu.org/onlinedocs/gccint/Libgcc.html
- Building a cross compiler: https://wiki.osdev.org/GCC_Cross-Compiler

Chapters:
0:00 Introduction
0:35 Why switch to GCC
4:00 config.mk
4:50 Automating toolchain build
10:22 Stage2 makefile
14:15 Stage2 linker script
15:45 Stage2 entry point (switching to protected mode)
16:59 Calling BIOS interrupts from protected mode
21:10 Text output in protected mode
24:05 Stage2 loading kernel
26:00 The kernel
27:02 Conclusion