
You can also support ReactOS by donating! We rely on our backers to maintain our servers and accelerate development by hiring full-time devs. Try out cloud-based ReactOS development using Gitpod and Docker:

Legal notice: If you have seen proprietary Microsoft Windows source code (including but not limited to the leaked Windows NT 3.5, NT 4, 2000 source code and the Windows Research Kernel), your contribution won't be accepted because of potential copyright violation.
REACTOS 0.4.10 HOW TO
We are always looking for developers! Check how to contribute if you are willing to participate. Please use our official chat or our forum. NOTE: The bug tracker is not for discussions. If not report the bug providing logs and as much information as possible. If you discover a bug in ReactOS search on JIRA first - it might be reported already.
REACTOS 0.4.10 INSTALL
See "Installing ReactOS" Wiki page or INSTALL for more details. Then burn the CD image, boot from it, and follow the instructions. To install ReactOS from the bootable CD distribution, extract the archive contents. But consider this as an experimental feature and thus regressions not triggered on FAT setup may be observed. Starting with 0.4.10, ReactOS can be installed using the BtrFS file system. ReactOS Setup can format the partitions if needed. The partition on which ReactOS is to be installed (which may or may not be the bootable partition) must also be formatted as FAT16 or FAT32. Installingīy default, ReactOS currently can only be installed on a machine that has a FAT16 or FAT32 partition as the active (bootable) partition. You can always download fresh binary builds of bootable images from the "Daily builds" page. This will create a CD image with a filename bootcd.iso. To build a bootable CD image run ninja bootcd from the build directory. Then run ninja to build a module you want or just ninja to build all modules. Choose configure.cmd or configure.sh depending on your system. To build ReactOS you must run the configure script in the directory you want to have your build files. See "Building ReactOS" article for more details.

Building with MSVC is covered here: "Visual Studio or Microsoft Visual C++". Up-to-date versions for Windows and for Unix/GNU-Linux are available from our download page at: "Build Environment".Īlternatively one can use Microsoft Visual C++ (MSVC) version 2015+. To build the system it is strongly advised to use the ReactOS Build Environment (RosBE). It is HIGHLY recommended to test ReactOS on a virtual machine or on a computer with no sensitive or critical data! Building Different things may not work well and it can corrupt the data present on your hard disk. This means that ReactOS is under heavy development and you have to be ready to encounter some problems. ReactOS is currently an Alpha quality operating system. The code of ReactOS is licensed under GNU GPL 2.0. The ReactOS project, although currently focused on Windows Server 2003 compatibility, is always keeping an eye toward compatibility with Windows Vista and future Windows NT releases.
REACTOS 0.4.10 DRIVERS
ReactOS™ is an Open Source effort to develop a quality operating system that is compatible with applications and drivers written for the Microsoft® Windows™ NT family of operating systems (NT4, 2000, XP, 2003, Vista, 7).
