ext4-win-driver is a Windows-first userspace driver for ext4 volumes. Plug an ext4 SD card or USB stick into Windows and the bundled ExtFsWatcher service mounts it on a free drive letter in the active console session via WinFsp; detach and it unmounts cleanly. The installer also wires a "Mount as ext4" right-click verb on .img files for offline disk-image inspection, and ships a CLI for browsing without mounting (info, ls, stat, cat, tree, parts, audit).
Setup.exe chains the WinFsp redistributable so end users only run one installer. Read-write is the default mount mode; pass --ro to the CLI or -ReadOnly to the right-click verb for safe inspection.
What's new in 0.2.2
Full Changelog：https://github.com/antimatter-studios/ext4-win-driver/compare/v0.2.1...v0.2.2
See the GitHub release page for the v0.2.0 changelog.
0.1.0May 8, 2026
Frequently asked questions
Is ext4-win-driver free?
Yes. ext4-win-driver is free and open-source software released under the GPL-3.0-only license.
What is the latest version of ext4-win-driver?
The latest version is 0.2.2, released on May 13, 2026.
Is it safe to download ext4-win-driver?
The download button links to the official installer published on github.com, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 967a001e6bd80de0af44b085c73097a96ea4ab0f5dd4d766cca4959231891031.
Which Windows versions does ext4-win-driver support?
ext4-win-driver runs on Windows and is available for ARM64, 64-bit (x64) systems.
How do I install ext4-win-driver silently?
Run the offline installer with "ext4-win-driver-0.2.2-x64-Setup.exe" /quiet /norestart /norestart, or install it with Windows Package Manager: winget install --id=AntimatterStudios.ext4-win-driver -e --silent.
How do I uninstall ext4-win-driver?
Open Settings › Apps › Installed apps, find ext4-win-driver and select Uninstall. From the command line, run winget uninstall --id=AntimatterStudios.ext4-win-driver -e.
Alternatives to ext4-win-driver
Other Disk & Partition programs for Windows from different developers.
A Windows RAM disk manager built on .NET 10 and [WinFsp](https://winfsp.dev). Create, mount and manage in-memory volumes that appear as normal drive letters in Explorer.
DiskInternals Linux Recovery is a handy no-cost utility that runs under any version of Windows and designed to recover the erased or damaged information that is kept on Ext2/Ext3/Ext4 partitions.
