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Is Windows Built on Linux?

Published in Operating Systems 3 mins read

No, Windows is not built on Linux.

Microsoft Windows and Linux are distinct operating systems with fundamentally different origins and core components. They were developed independently and utilize separate underlying technologies.

Understanding Operating System Kernels

At the heart of every operating system is its kernel. The kernel is a critical program that has total control of the computer's hardware, managing system resources, and facilitating communication between hardware and software. Different operating systems are built around their unique kernels, which dictate how they function and interact with hardware.

The Windows NT Kernel: Microsoft's Foundation

Microsoft's modern operating systems, including Windows 10 and other contemporary versions of Windows, are based on the Windows NT kernel. This kernel was developed entirely by Microsoft and is proprietary to the company.

  • Windows 10 was not based on Linux or Unix.
  • It was written by Microsoft.
  • It runs on their specific kernel, known as the Windows NT kernel.

This means that the core programming and architecture of Windows are entirely separate from Linux.

Distinguishing Windows and Linux

While both Windows and Linux are popular operating systems, their lineages diverge significantly.

  • Windows was developed independently by Microsoft, evolving from early DOS-based systems to the sophisticated Windows NT architecture.
  • Linux, on the other hand, is a Unix-like operating system kernel created by Linus Torvalds and developed collaboratively. It shares a common ancestry with Unix, similar to how macOS and Ubuntu Linux trace their roots back to Unix.

The table below highlights some key differences:

Feature Microsoft Windows Linux
Core Kernel Windows NT kernel Linux kernel (Unix-like)
Developer Microsoft Community-developed (initiated by Linus Torvalds)
Ancestry Independent development Unix-like
Source Code Proprietary (closed source) Open-source

Why the Confusion? Windows Subsystem for Linux (WSL)

A common source of confusion regarding Windows and Linux integration is the existence of the Windows Subsystem for Linux (WSL). WSL is a compatibility layer that allows users to run a Linux environment directly on Windows, including most command-line tools, utilities, and applications, without the overhead of a traditional virtual machine.

It's important to understand that:

  • WSL enables running Linux distributions on Windows.
  • It does not mean Windows itself is built on Linux.
  • Windows still operates on its native NT kernel, while WSL provides a translation layer for Linux commands and binaries to interact with the Windows kernel.

In summary, Windows and Linux are distinct operating systems, each with its unique kernel and development history.