Mount Vmfs 6 Windows Hot ((free)) Link

Native support for on Windows is non-existent because the file system is proprietary to VMware. To mount it "hot" (while the data is accessible) on a Windows 11 or 10 machine, you must use third-party drivers or recovery tools. Top Solutions for Mounting VMFS 6 on Windows

How to Access VMFS Datastore from Linux, ESXi host or Windows

Title: How to Mount & Read a VMFS 6 Datastore on Windows (The Hot Way)

Intro If you’ve ever lost an ESXi host or just need to recover a single VMDK from a dead server, you know the struggle: Windows cannot natively read VMFS 6. Unlike VMFS 5, which had some legacy workarounds, VMFS 6 is leaner, meaner, and locked down.

But here’s the hot take—you can mount it, read it, and copy data off it without spinning up a full Linux VM. Let me show you the fastest method right now.

The Problem

• Windows sees the LUN/disk as “Unknown” or “RAW.”
• No built-in drivers for VMware’s file system.
• Write-access is dangerous (don't do it unless you love corruption).

The Hot Solution: Use a Dedicated Windows Driver

Forget the old “mount in Ubuntu” dance. The current hot tool for Windows is VMFS Tool (from StarWind or similar) or OSFMount with a VMFS driver. But the most reliable right now is:

Prerequisites for Hot Mounting VMFS 6

Before you begin, ensure you have:

1. Windows Server 2016/2019/2022 or Windows 10/11 Pro for Workstations (64-bit).
2. Physical or direct access to the disk (SATA, SAS, NVMe, or iSCSI LUN from a failed SAN).
3. Administrator privileges (to load unsigned or custom drivers).
4. Backup of the disk – VMFS operations are safe to read, but never write to a live VMFS volume unless it’s unmounted from all ESXi hosts.

1. Third-Party Drivers and Tools (The “Hot” Solutions)

Several commercial products provide a Windows driver that mounts VMFS volumes as regular drive letters. These are the closest you’ll get to a “hot” mount.

| Tool | Read/Write | Hot Mount | Notes | |------|------------|-----------|-------| | OSFMount (by PassMark) | Read-only | Yes | Free, but limited to VMFS 1–5. VMFS 6 support is partial. | | DiskInternals VMFS Recovery | Read-only | Yes | Supports VMFS 6, but no write access in the free version. | | UFS Explorer Professional Recovery | Read/write | Yes | Full write support for VMFS 6. Not free (~$500). | | Runtime Software’s Explore2fs | Read-only | No | Outdated; not recommended for VMFS 6. | | StarWind V2V Converter | Indirect | No | Converts remote VMFS files to VHDX, but doesn’t mount the volume. | mount vmfs 6 windows hot

How they work: These tools install a kernel-level filter driver that interprets VMFS structures and presents them as a disk device or a mounted folder. For write access, they must handle VMware’s distributed locking — a complex task. That’s why read/write tools are expensive and not open-source.

Important caution: Writing to a VMFS 6 volume from Windows while it is also attached to an ESXi host will corrupt the datastore. VMware’s locking mechanism prevents multiple writers, and third-party tools rarely (if ever) implement SCSI reservations correctly. For a “hot” mount, ensure the datastore is not actively used by any ESXi host — or detach it first.

Steps (For Professional Use Only):

1. In vSphere, unmount the VMFS 6 datastore (right-click datastore → Unmount). Do not delete it.
2. Rescan your SAN adapter on the Windows machine.
3. Open UFS Explorer → Select the disk → Choose “VMFS 6” → Click “Mount as Read-Write.”
4. Make changes, then unmount.
5. Remount the datastore in vSphere and resignature if necessary.

🛑 Warning: If you write while ESXi still has the datastore mounted, you will see “heartbeat failure” errors, followed by a purple diagnostic screen (PSOD) on the host.

Post: How to Mount VMFS6 on Windows (Hot/Offline Access)

If you have removed a hard drive from an ESXi server or have a raw VMDK/physical disk formatted with VMFS6 that you need to access from a Windows machine, you will quickly find that Windows cannot natively read VMFS.

Here are the available methods to achieve this. Native support for on Windows is non-existent because

Method 1: Using StarWind V2V Converter’s Hot Mount Feature (Recommended)

Best for: Live hot mount without reboot. Free tool.

StarWind V2V Converter includes a hidden gem: a VMFS 6 reader that dynamically loads a driver on demand.

4. UFS Explorer Professional (Paid, Forensic-Grade)

The most robust commercial solution. UFS Explorer can mount VMFS 6 in read-write mode if you disable ESXi access first, but for hot mounting, you use “Read-Only Access” mode. It also handles complex RAID configurations.

"Hot driver unload fails after mount"

Use Windows’ mountvol Z: /d to dismount the volume, then stop the driver service (e.g., net stop vmfs6driver). In StarWind, press the "Unmount" button.