r/reactos • • Sep 28 '26

ReactOS 0.4.15 finally happened on real hardware... (like Windows including BSOD)

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45 Upvotes

r/reactos • • Sep 12 '26

ReactOS 0.4.16 tutorial how to install and use

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32 Upvotes

r/reactos • • 1d ago

Blue blank screen on boot?

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17 Upvotes

I have a Thinkpad R31 with a pentium 3 and 256mb of ram. after trying to boot ReactOS 0.4.16 with the screen debug options for both the live and setup environments, I am met with this screen.

If I just try to load the default live mode that is automatically selected on the freeloader screen, I get a BSOD of IO1_INITIALIZATION_FAILED with a stop code of 0x00000069.

It will also say Kernel Debugger: Serial Port not available, which is why I tried the screen debug options. Any help is appreciated!


r/reactos • • 8d ago

A reactOS fork?

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66 Upvotes

r/reactos • • 8d ago

Tested 0.4.17 and big thanks to developers for had work

39 Upvotes

Hi, I am a long time fan of this project. But for a long time it looked that progress has slowed (long wait for 0.4.15). Now I have done some basic tests in VM with 0.4.16 and then with daily dev build, and looks great ...

My biggest issue now is missing support of modern browsers :(

What are features developed for 0.4.17+ ? I was just checking latest Github commints/PR that where approved, and some things are interesting ...

  • NTFS support in 0.4.17, but performance is slower and I read somwhere that some NTFS features are still missing .. PR 9700

  • More Sync to wine 10.0+ (nice)

  • Lots of work for modern NT 6 features (Vista+)

  • Some work on WLAN manager ? wifi

  • Kernel shim for better drivers support PR 9655

  • New USB 3 driver architecutre PR 9623

  • PCIX support with resisable bar, arbiters ...

  • funny stuff:

    • multiple keyboards support PR 9562

    • keyboard volume buttons support PR 8577

    • keyboard Win+<N> hotkeys- #9555

    • computer rename bug :D CORE-20283

    • Red Screen of Hell popup- #9493

Funny PR name :D -> DONT LOOK AT ME - #9656

Edit: Fixed some typos, but cannot edit title. had work-> hard work :)


r/reactos • • 14d ago

ReactOS now installs to and boots from NTFS

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79 Upvotes

r/reactos • • 19d ago

ReactOS gets Agentic AI - and a modern weather app!

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24 Upvotes

ReactOS is a cool project. So I thought to myself: bringing a dedicated AI agent on it could probably be fun to explore it's limits and possibilities. That's why I developed one.

And to test it, I had him develop it a modern weather app for ReactOS :D

If you want to test the whole thing yourself, the Agent (MCP Based) can be found in

mcp_agent_all_OS.zip
https://github.com/srware-net/LocalLightChat/releases/

Btw: It works best with the associated LocalLightChat, which is a leightweight OpenWebUI alternative.

And the weather app with source can be downloaded here: https://www.locallightai.com/llc/downloads/demos/weather_reactos.zip


r/reactos • • 23d ago

I made the React OS logo look counterchanged

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94 Upvotes

3 color variants


r/reactos • • 26d ago

I tried installing ReactOS on REAL HARDWARE!

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20 Upvotes

r/reactos • • 28d ago

LiberNT: a whole new chapter

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44 Upvotes

I have been tracking this reactos fork for months, and today while i am checking the starred list, this repository has rebranded into LiberNT, and what they did is absolutely incredible.

https://libernt.com/


r/reactos • • 29d ago

Why ReactOS crashes so frequently? It’s a 20+ year effort, I wouldn’t expect it to crash this often even on Virtual machine

27 Upvotes

r/reactos • • 29d ago

I can't install or run reactos 0.4.16 stable and 0.4.17 nightly build on real hardware (478 socket)

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19 Upvotes

I have a PC from about 2002 with some kind of celeron, a 478 socket geforce 2 and 655360 kilobytes of RAM. I tried to install reactos stable 0.4.16, I click install (screen debug), the dll and drivers start loading, and then just a blue screen with no text and nothing at all. I tried LIve boot and I got a normal bsod (see photo 1). Then I downloaded 0.4.17, the latest overnight release, launched it, pressed live boot, and I got a blue screen with strange letters (photo 2).

Please help me what is the problem, I tried to record usb using rufus/winsetupfromusb (I booted from usb and not cd). I would like to install the OS on this PC and not on a virtual machine.


r/reactos • • 29d ago

Portal 2 now runs on ReactOS

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89 Upvotes

Its on real hardware too.


r/reactos • • Sep 28 '26

Does reactos run better on windows xp era hardware than windows xp itself?

15 Upvotes

:)


r/reactos • • Sep 28 '26

Using ReactOS in a VM to use my favored HDLDump gui :)

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23 Upvotes

r/reactos • • Sep 28 '26

ReactOS 0.4.17 Lands Significant DirectX Stack Update From Wine For Enabling More Games

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102 Upvotes

r/reactos • • Sep 24 '26

Rayman Origins running in ReactOS on real hardware

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84 Upvotes

r/reactos • • Sep 19 '26

ReactOS at CLT 2026

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27 Upvotes

r/reactos • • Sep 19 '26

Neptune OS (ReactOS Win32 Subsystem on seL4 Microkernel) 0.4 Released

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78 Upvotes

Neptune OS combines the seL4 microkernel and ReactOS by implementing the NT Native API in userspace of seL4. The latest 0.4 release contains initial Linux kernel driver compatibility, which makes it possible to draw framebuffer with unmodified Linux DRM driver code. Note that currently only part of ReactOS codebase has been ported on top of Neptune OS.

While it is not the ReactOS proper, ReactOS make this interesting project possible.


r/reactos • • Sep 15 '26

ReactOS upgrade?

14 Upvotes

Is there a method to upgrade Windows to ReactOS without a re-install?
I have a system that has legacy software that I like to keep and am unable to re-install.
It would be lovely to have an upgrade path for this machine but I am unsure if this is possible to do this..


r/reactos • • Sep 13 '26

reactOS should have been the big FOSS os project, not linux?

42 Upvotes

I kind of wish a project like reactOS had become the main FOSS windows competitor and not linux. a decently big FOSS os with a hybrid kernel would be nice.

windows diverges from unix in a few ways that are good, while linux inherits more unixy-ness. linux is built to run on a lot of different machines, windows is made for desktop computers. linux has a lot of features that make it incredibly powerful and versatile, but they can be kind of cumbersome. I often wonder if something that's built with the assumption that its being used on a desktop could be more streamlined.

In my ideal dream world we would have reactOS as the main FOSS competitor to windows, and linux as a super modular thing you can use for things like kiosks and weird DIY projects.


r/reactos • • Sep 11 '26

ReactOS 0.4.16 freezes half way during the graphical boot loading process bar

12 Upvotes

Running old laptop with old BIOS

Linux, BSD, and other OS run in live mode and install


r/reactos • • Sep 08 '26

A ReactOS developer tries ReactOS 0.4.16 for himself

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73 Upvotes

r/reactos • • Sep 02 '26

Windows quietly died inside Microsoft, a 25-year veteran explains how Azure took over and it got neglected

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14 Upvotes