The New Generation of the James Molloy Operating System

This is an enhanced version of the James Molloy Operating System tutorial code, originally sourced from James Molloy's OS Tutorial.

Improvements

• The bootloader has been upgraded to GRUB2, offering better compatibility and support for modern systems. The grub-mkrescue tool is now used to create bootable ISO images.
• A script has been added to simplify the execution of the OS within QEMU for easier testing.
• The build system has been modernized using the Meaty Skeleton, offering a more flexible and efficient structure for compiling and linking the OS components.
• The assembly source files have been renamed from .s to .asm to adhere to more common naming conventions and improve readability.

Known Bugs

James Molloy's tutorial has known bugs, which are documented here. For a bug-free version, you can switch to the fixed-known-bugs branch.

Setup & Usage

Prerequisites

Before building and running the OS, make sure you have the following tools installed:

• GRUB
• NASM
• QEMU
• Make
• i686-cross-compiler

Building the OS

To build the OS, simply run the following command:

./build.sh

Running the OS

With QEMU:

./qemu.sh

With Bochs:

./bochs.sh