Forum Discussion

Copper Contributor

Aug 10, 2026

Solved

No ReFS option in 29641

When install OS using the ISO image of this new build, there is no ReFS filesystem selection as in build 29621, is there any change in Windows setup?

@Windows Server

storage

Christina_Curlette
Aug 21, 2026
This is a known issue and will be fixed in an upcoming Insider preview build. I will share the build number as soon as it's confirmed. In the meantime as a workaround, you may also use setup unattend to configure ReFS boot on your systems: ReFS Boot Volume Setup for Windows Server (preview) | Microsoft Learn

JoonasD6

Brass Contributor

Aug 15, 2026

I wondered the same several builds ago. I don't know if something has indeed changed, but the installer is so good at hiding "at which point can I select the filesystem?", and I failed once because I deleted the Recovery partition (WinRE), thinking I don't need specific recovery features – realising only after a couple of installations that yeah I had to let Windows create that 2 GB partition and I had to leave it alone for ReFS to be an option. Now to try to remember at which point that partition got created... only after clearing the whole medium? I wish there just a separate "Create recovery partition (mandatory for ReFS)" button.