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What is Sinux?

Sinux is a minimal 64-bit Unix-like operating system kernel written from scratch in C and x86_64 Assembly. It boots via GRUB Multiboot2, supports both UEFI and BIOS, and runs on real hardware or QEMU.

:::info It is not Linux Sinux does not run Linux programs. It is an independent, educational kernel built to understand how real operating systems work at the lowest level. :::

Features​

Sinux implements its own:

  • 🧠 Physical & virtual memory manager (PMM + VMM)
  • 📁 VFS (Virtual File System) with ramfs and ext2 support
  • 💾 ATA PIO disk driver for persistent storage
  • ⌨️ PS/2 keyboard and VGA text mode drivers
  • 🔌 Serial (COM1) debug output
  • ⚙️ Low-level tables: IDT, GDT, TSS, PIC, PIT
  • 🧩 Syscall interface (Linux x86_64 ABI compatible)
  • 🔁 Process scheduler (round-robin)
  • 📦 ELF64 loader for userspace programs
  • 🛡️ Ring 3 (user mode) execution
  • 🔗 Pipe and signal primitives
  • 🐚 Built-in shell with filesystem commands

Project status​

Sinux is an active hobby project. The latest tagged release is V0.04. Follow the Updates section for release notes and development progress.