what happened to chapters 9-19? They used to be in the readme now there is no even indication about them. Please finish the book, this is very good work.
Chapter 9: Process management and multitasking
Chapter 10: External program execution: ELF files
Chapter 11: Userland and syscalls
Chapter 12: Modular drivers
Chapter 13: Some basics modules: console, keyboard
Chapter 14: IDE Hard disks
Chapter 15: DOS Partitions
Chapter 16: EXT2 read-only filesystems
Chapter 17: Standard C library (libC)
Chapter 18: UNIX basic tools: sh, cat
Chapter 19: Lua interpreter