Developing a Multithreaded Kernel from Scratch

• Real Mode Development
• Protected Mode Development
• Assembly Language Bonus

Each section offers a unique perspective on kernel development and is designed to build your skills incrementally.

Real Mode Development

• The boot process and how memory works
• Writing a boot loader in assembly language
• Working with interrupts in real mode
• Reading a sector (512 bytes) from the hard disk

Protected Mode Development

32-bit multi-tasking kernel featuring:

• FAT16 filesystem implementation
• Memory management and virtualization techniques
• Keyboard driver implementation
• ELF file loader creation
• Design of a virtual filesystem layer (inspired by Linux kernel)
• Process and task functionality

Primary Bullets

• Creating a kernel from scratch
• Developing a multi-tasking kernel
• Handling problematic programs in your operating system
• Understanding how memory works in computers
• Differentiating between kernel land, user land, and the protection rings
• Learning kernel design patterns used by Linux
• Understanding and implementing virtual memory
• Developing processes and tasks in the kernel
• Loading ELF files
• Debugging disassembled machine code
• Debugging your kernel in an emulator with GDB