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ReactOS reaches major milestone with NTFS install support

arstechnica.com29 points2 comments
Screenshot of ReactOS reaches major milestone with NTFS install support

ReactOS can now be installed directly onto NTFS partitions thanks to a newly developed driver, clearing a long-standing practical barrier for the open-source reimplementation of Windows. Until now, installations required a FAT32 partition despite earlier steps toward NTFS compatibility: read-only NTFS support arrived in 2016 and bootloader (FreeLoader) NTFS boot support in 2022. NTFS, the proprietary filesystem that became standard with Windows XP and traces back to Windows NT 3.1, is used by most Windows systems, so native install support brings ReactOS closer to its stated goal of binary compatibility with Windows Server 2003 and to reaching beta status after years of incremental progress.

The new NTFS driver is deliberately incomplete: it lacks caching (resulting in inferior performance), journaling, and security features, and the ReactOS team warns of undiscovered bugs, so installation and everyday use remain risky for most users. Development is community-driven and coordinated on public channels such as GitHub and project forums, reflecting the volunteer nature and long timeline of reimplementing an operating system from scratch. The milestone closes a nearly decade-old gap - moving ReactOS onto the same filesystem as Windows - but does not yet make it a practical replacement for mainstream Windows deployments.

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