Microsoft has released Windows Server vNext Preview Build 29531, introducing ReFS boot support for enhanced integrity checks and data protection at startup, although it requires a mandatory 2 GB WinRE partition that could lead to complications if space runs low. Users are advised to perform a clean installation instead of upgrading from any earlier preview builds due to potential operational failures during migration. The clean installation process involves downloading the appropriate ISO, creating a bootable USB, and ensuring the partitions are deleted for a fresh setup that includes the required WinRE slice. Additionally, users should be aware of limitations regarding resizing the WinRE partition post-installation and utilize the preinstalled Feedback Hub for troubleshooting any issues

Windows Server vNext Preview Build 29531: What's New and How to Install

Microsoft has released a new preview build, Windows Server vNext Preview Build 29531, to its server preview program insiders. This latest drop introduces ReFS (Resilient File System) boot support, allowing for faster integrity checks and better protection against data corruption at startup. However, enabling this feature requires a mandatory 2 GB WinRE partition, which can cause issues if it runs out of space. If the recovery slice is deleted to free up space, it may render the machine unbootable unless reinstalled from scratch.

Windows Server vNext Preview Build 29531: What's New and How to Install @ NT Compatible