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Sharoy Veduchi — Sun, 09 Nov 2025 22:54:16 -0000

I will try to answer some of these questions. I'm not a developer of ReactOS but I've been following the project closely and talk with the devs sometimes.

"You are duplicating the NT API right?"
The whole operating system is reverse engineered, for a long time it was targeting Windows Server 2003. Now some more modern aspects from Vista and 7 are being targeted. I'm not the most technical guy but I think therefore it wouldn't be accurate to just say it's only the API.

"Does the kernel run Virtual86 mode and does it implement all 4 rings?"
Whatever Windows Server 2003 does, that was the goal. If that's what Windows XP/2003 was doing back then, then that's probably what's happening.

"ReactOS is not Linux right?"
There is not a lick of Linux code in there and you can build the project with Microsoft Visual Studio's compilers if you don't like GCC. ReactOS's website always has two builds available for you to download when you check out the developer daily builds.

"How are you obtaining the kernel?"
Everything is clean-room reverse engineered. So I don't agree with the word "obtained". It's being created.

"Would you welcome help? Money?"
I've donated some money in the past and I will continue to do so, I think it would be in most people's interest to support ReactOS somehow. Someone like you however could also help out with development and I'm sure the team would highly appreciate it. There is both an IRC channel and a Discord group (and I think Matrix group?) you can use to talk with the developers.

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EmuandCo — Sun, 23 Mar 2025 12:26:50 -0000

DirectX rootkit? Please elaborate what you are talking about

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markfilipak — Sun, 23 Mar 2025 03:08:37 -0000

Hello, I'm a bit mystified by this. Perhaps others are, too. I need to ask some technical questions. My background is as a processor architect with Intel, High Integration Microprocessor Operation (HIMO), in 1985.

You are duplicating the NT API, right?
ReactOS is not Linux, right?
Does the kernel run Virtual-86 mode and does it implement all 4 rings?
How-where are you obtaining the kernel?
Have you duplicated or plan to duplicate the Direct-X rootkit?
Would you welcome help? money?

That will do for starters. Thanks.

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Dindin Hernawan — Tue, 17 Jan 2023 08:42:02 -0000

very good where nowadays there are rarely projects that support old hardware, and the system features are also capable

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Lewis Butler — Fri, 04 May 2018 21:25:17 -0000

Anyone seeing a Trojan warning during d/l? Getting this from Windows Defender:

Category: Trojan

Description: This program is dangerous and executes commands from an attacker.
Recommended action: Remove this software immediately.
Items:
containerfile:C:\Users...\Downloads\ReactOS-0.4.8-live (1).zip
(1).zip->ReactOS-0.4.8-Live.iso->reactos\system32\drwtsn32.exe
Get more information about this item online.

Identifies as Win32/Tiggre!plock

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Konstantinos K. — Mon, 16 Apr 2018 09:25:44 -0000

Alpha stage ..before some idiot try to install it in an actual machine and moaning it's trash or something - Can't wait for the 0.5 beta version !!

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Peter Sharpe — Wed, 04 Apr 2018 18:57:34 -0000

I'll give it a shot, thank you

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Wiesława Olkowska — Wed, 27 Jan 2016 14:47:53 -0000

An interesting system, I'm going to test it. Thanks.

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Droid — Fri, 28 Jun 2013 15:30:52 -0000

Thanks for screenshots :)

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Aleksey Bragin — Fri, 21 Dec 2012 13:53:06 -0000

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