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ReactOS Adds Direct NTFS Installation Support

ReactOS adds direct NTFS install support, a step toward beta, but the driver lacks caching, journaling and security.

AI News Feed · 2026-10-20 04:40

Before the change, ReactOS required users to keep a FAT32 partition for installations. NTFS is a proprietary filesystem developed by Microsoft. Its roots run through the Windows NT family, starting with Windows NT 3.1 in 1993. The variant introduced with Windows XP in 2001 remains the standard used by most Windows systems today.

ReactOS has stated a goal of binary compatibility with Windows Server 2003. Being confined to FAT32 partitions was a practical barrier to clear on the way to reproducing the Windows environment, Ars Technica reported.

The project also said the new driver still lacks caching, journaling and security support. The absence of caching causes inferior performance, according to ReactOS. The team warned in its announcement on X that there are still "potentially undiscovered bugs." Ars Technica said even the most intrepid OS tinkerers should tread carefully.

The milestone moves ReactOS past a restriction that had shaped its installation process. The project has not said the new driver is complete; its announcement listed the missing caching, journaling and security support alongside the new NTFS installation capability.

Editor's Summary

ReactOS can now install directly to NTFS partitions, removing a long-standing requirement for FAT32 and moving the project closer to beta. The new driver still lacks caching, journaling and security support, and the project warns of potentially undiscovered bugs. The milestone improves installation compatibility but does not make the operating system a finished Windows replacement.