xing1357/SimpleOS — reverse-engineered prompt

Build me a tiny educational DOS like operating system in C and assembly. I want it to boot in a virtual machine, show a simple text screen, accept keyboard input, and give me a basic command shell where I can type simple commands and interact with files in a small root filesystem.

Please keep it simple and understandable, more like a learning project than a full modern OS. Include the kernel, boot code, headers, source files, a basic filesystem setup, and scripts or make targets so I can build everything with one command and run it in QEMU with one command. If possible, also produce an ISO or disk image that can be opened in VirtualBox or VMware by choosing a generic OS option.

Add a short README that explains what the OS does, how to build it, how to run it, and where the main source code lives. Look up current emulator docs online if you need to.