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Windows Server 2022 after restart Disk become from NTFS to RAW

Jose Benjamin Solis Nolasco 6,256 Reputation points
2025-11-13T14:20:24.1633333+00:00

Is there is a way to fix a DISK with information that become RAW after a restart?

We have troubleshooting the issue moving this virtual disk to another machine, using chkdsk, ....

Windows for business | Windows Server | Storage high availability | Other
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  1. Nam Bui (WICLOUD CORPORATION) 625 Reputation points Microsoft External Staff Moderator
    2025-11-14T05:31:21.7466667+00:00

    Hi Jose,

    Thanks for the update and for confirming the troubleshooting already performed.

    When a volume changes from NTFS to RAW after a restart, it normally indicates corruption in the NTFS boot sector or file system metadata. At this stage, Windows can only repair the volume if the core NTFS structures are still readable.

    If the disk continues to appear as RAW after the actions you’ve already taken, the next steps within Microsoft support boundaries are:

    1. Verify disk and controller health

    Please confirm whether the underlying disk or storage controller reports any issues:

    Get-Disk | Select Number, OperationalStatus, HealthStatus Get-PhysicalDisk

    Any “Unhealthy”, “Warning”, or “Lost Communication” state may explain the RAW behavior.

    2. Check system events around the restart

    Look for NTFS or disk-related errors in Event Viewer → System log (for example Event ID 55, 153, 154). These entries help determine whether the issue comes from the file system or the storage layer.

    3. Confirm disk type

    Please share whether this volume is on:

    a physical disk

    a VHD/VHDX

    a Storage Spaces virtual disk

    SAN / RAID hardware
    Because recovery options vary depending on the storage architecture.
    Unfortunately, once Windows mounts the volume as RAW and standard tools cannot read NTFS metadata, Windows has no further built-in methods to restore the file system. At that point, the supported path is to recover the volume from a known-good backup.

    If you find this information useful to some extent, please accept the answer so that your experience with the issue would help contribute to the whole community.
    Best wishes!
    Titus Bui.

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  1. Q&A Assist
    2025-11-13T14:20:54.5866667+00:00
    AI generated content. This question contains an answer created with AI from Q&A Assist. Learn more

    If a disk has changed from NTFS to RAW after a restart, it typically indicates file system corruption or an issue with the disk itself. Here are some steps you can take to attempt to resolve this issue:

    1. Check Disk Health: Ensure that the physical disk is healthy. You can use tools like Get-Disk in PowerShell to check the status of the disk.
    2. Run CHKDSK: Since you mentioned using chkdsk, ensure you run it with the appropriate parameters. Running chkdsk /f can help fix file system errors, but it may require the disk to be offline or the system to be restarted.
    3. Check for Hardware Issues: If the disk is virtual, ensure that the underlying storage is functioning correctly. Sometimes, moving the virtual disk to another machine can help identify if the issue is with the original machine's configuration.
    4. Data Recovery Tools: If the disk remains RAW and you need to recover data, consider using data recovery software that can handle RAW disks. This software may be able to recover files without needing to format the disk.
    5. Reformatting: If data recovery is not a concern, you may need to format the disk to restore it to a usable state. Be aware that this will erase all data on the disk.
    6. Check Event Logs: Look for any related errors in the Event Viewer, such as Event ID 55, which indicates file system corruption. This can provide more insight into what caused the issue.

    If these steps do not resolve the issue, you may need to consult with a storage specialist or consider replacing the disk if it is failing.

    References:

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