Partially Supported BypassIO


B

Byron

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Windows 11
Hi,

I'm trying to get Direct Storage to work. When I run "fsutil bypassIo state d:\" I get the following,

BypassIo on "d:\" is partially supported
Volume stack bypass is disabled (ntfs.sys)
Storage Type: Spaces
Storage Driver: Not BypassIo Compatible

Anyone know what this means?
I have updated BIOS, CPU and GPU drivers.
 
Windows Build/Version
Version 24H2 Build 26100.4652

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abactuon said:
fsutil bypassIO state /v d:\

learn.microsoft.com

BypassIO for Filter Drivers - Windows drivers

About BypassIO
learn.microsoft.com
Click to expand...

Thanks for your help.
What am I looking at exactly? I'm a bit of layman when comes to this stuff.
The driver volmgr.sys is blocking it?

BypassIo on "d:\" is partially supported
Volume stack bypass is disabled (ntfs.sys)
Status: 50 (The request is not supported)
Reason: The IOCTL_STORAGE_MANAGE_BYPASS_IO operation failed
Storage Type: Spaces
Storage Driver: Not BypassIo Compatible
Driver Name: volmgr.sys
 
Last edited:

My Computer My Computer

At a glance

Windows 11Ryzen 5 7500F32Gb DDR5RTX 4070 Ti Super
OS
Windows 11
Computer type
PC/Desktop
Manufacturer/Model
MSI
CPU
Ryzen 5 7500F
Motherboard
B650M Gaming Plus
Memory
32Gb DDR5
Graphics Card(s)
RTX 4070 Ti Super
Monitor(s) Displays
Sony Bravia 8 MkII
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Byron said:
What am I looking at exactly? I'm a bit of layman when comes to this stuff
Click to expand...

The command:

Code: 
fsutil bypassIO state /v d:\

Performs a detailed check on the BypassIO state for the D:\ volume in Windows, with verbose output.
  • fsutil: A built-in Windows command-line utility for managing file systems.
  • bypassIO: A subcommand introduced for checking compatibility with Bypass I/O, a feature used by DirectStorage.
  • state: Queries the current Bypass I/O state of the specified volume.
  • /v: Stands for verbose—this gives extra details beyond the default.
  • d:\: The target volume to be queried (in this case, drive D).

Also, copy what you asked, into ChatGPT. It’s quite revealing and may give you the answer you need.

I'm trying to get Direct Storage to work. When I run "fsutil bypassIo state d:\" I get the following,

BypassIo on "d:\" is partially supported
Volume stack bypass is disabled (ntfs.sys)
Storage Type: Spaces
Storage Driver: Not BypassIo Compatible
Click to expand...

 

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    Windows 11 Pro 25H2 Build 26200.8655Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz32.0 GB of I forget and the box is in storage.Gigabyte nVidia GeForce GTX 1660 Super OC 6GB
    OS
    Windows 11 Pro 25H2 Build 26200.8655
    Computer type
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    Sin-built 2013
    CPU
    Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz
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    ASUS ROG Maximus VI Formula
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Byron said:
BypassIo on "d:\" is partially supported
Volume stack bypass is disabled (ntfs.sys)
Status: 50 (The request is not supported)
Reason: The IOCTL_STORAGE_MANAGE_BYPASS_IO operation failed
Storage Type: Spaces
Storage Driver: Not BypassIo Compatible
Driver Name: volmgr.sys
Click to expand...

For instance:

DirectStorage will NOT work properly on your current D:\ drive.

Possible rasons:
• The drive is part of a Storage Spaces pool, which is incompatible with BypassIO.
• The volume stack (ntfs.sys) does not allow I/O bypass due to virtualization.
• The underlying driver (volmgr.sys) is not BypassIO-compatible.
• The request failed with status code 50: “The request is not supported”.

Possible options to enable DirectStorage:
• Use a dedicated, physical NVMe SSD (not part of Storage Spaces).
• Format it with NTFS.
• Ensure it uses a compatible storage driver (e.g., stornvme.sys).
• Avoid RAID, USB enclosures, or virtual disk pooling.
 

My Computers My Computers

System One System Two Other systems

  • At a glance

    Windows 11 Pro 25H2 Build 26200.8655Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz32.0 GB of I forget and the box is in storage.Gigabyte nVidia GeForce GTX 1660 Super OC 6GB
    OS
    Windows 11 Pro 25H2 Build 26200.8655
    Computer type
    PC/Desktop
    Manufacturer/Model
    Sin-built 2013
    CPU
    Intel(R) Core(TM) i7-4770K CPU @ 3.50GHz
    Motherboard
    ASUS ROG Maximus VI Formula
    Memory
    32.0 GB of I forget and the box is in storage.
    Graphics Card(s)
    Gigabyte nVidia GeForce GTX 1660 Super OC 6GB
    Sound Card
    ROG SupremeFX Formula 8-Channel High Definition Audio
    Monitor(s) Displays
    5 x LG 25MS500-B - 1 x 24MK430H-B - 1 x Wacom Pro 22" Touch Screen Tablet
    Screen Resolution
    All over the place
    Hard Drives
    Too many to list. OS on Samsung 1TB 870 QVO SATA
    PSU
    Silverstone 1500
    Case
    NZXT Phantom 820 Full-Tower Case
    Cooling
    Noctua NH-D15 Elite Class Dual Tower CPU Cooler / 6 x EziDIY 120mm / 2 x Corsair 140mm somethings / 1 x 140mm Thermaltake something / 2 x 200mm Corsair.
    Keyboard
    Corsair K95 / Logitech diNovo Edge Wireless
    Mouse
    Logitech: G402 / G502 / Mx Masters / Mx Air Cordless
    Internet Speed
    2000/500Mbps
    Browser
    All sorts
    Antivirus
    Kaspersky Premium
    Other Info
    ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
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    Brother MFC-L2880DW Printer

    I’m on a horse.

  • At a glance

    Windows 11 Pro 25H2 Build 26200.8655 (Wifes)13th Generation Intel® Core™ i5-1340P Process...16GB LPDDR5-52001x Intel® Iris® Xe Graphics
    Operating System
    Windows 11 Pro 25H2 Build 26200.8655 (Wifes)
    Computer type
    Laptop
    Manufacturer/Model
    LENOVO Yoga 7 14IRL8 - Type 82YL
    CPU
    13th Generation Intel® Core™ i5-1340P Processor(Core™ i5-1340P)
    Memory
    16GB LPDDR5-5200
    Graphics card(s)
    1x Intel® Iris® Xe Graphics
    Sound Card
    Optimized with Dolby Atmos®
    Screen Resolution
    QHD 2880 x 1800 OLED
    Hard Drives
    M.2 512 GB SSD PCIe
    Mouse
    Logiteck MX Master 3S
    Internet Speed
    2000/500
    Antivirus
    Defender / Malwarebytes
    Other Info
    …still on a horse.


    Wireless Network: Wi-Fi 6E 2x2 AX; Bluetooth® 5.1 or above
    Ports: 1x 1 Novo button; 2 in 1 Audio Combo jack; Micro SD Card Reader; HDMI 1.4b; 2 x USB Type-C (TBT4)
    USB 3.2 Gen 2 DP 1.4a
    PD 3.0); 1 x USB 3.2 Gen1 Type A
    Camera
    1x 1080P FHD IR/RGB Hybrid with Privacy Shutter and Dual Array Microphone
    Graphics
    1x Intel® Iris® Xe Graphics
    Monitor
    14" WUXGA
    Form Factor
    Convertible Notebook
  • Windows 11 Pro 25H2 Build 26200.8655 (Wifes)

    Yoga 7 2-in-1 14IML9 - Type 83DJ

    Processor: Intel® Core™ Ultra 7 155H Processor(Core™ Ultra 7 155H)

    Memory: 32GB LPD5X-7467

    Hard Drive: 1 TB SSD PCIe

    Wireless Network: 1x Wi-Fi 6E 2x2 AX; Bluetooth® 5.1 or above

    Ports: 1 x HDMI 2.1 TMDS; 1 x Novo Button; 1 x Combo Audio Jack
    2 x USB-C (USB 4.0)
    1 x USB-A 3.2 Gen 1

    Camera: 1080P FHD IR Hybrid with Dual Microphone

    Graphics: Intel® Arc™ Graphics

    Monitor: 14" 2.8K

    ...Where's my horse?
antspants said:
The command:

Code: 
fsutil bypassIO state /v d:\

Performs a detailed check on the BypassIO state for the D:\ volume in Windows, with verbose output.
  • fsutil: A built-in Windows command-line utility for managing file systems.
  • bypassIO: A subcommand introduced for checking compatibility with Bypass I/O, a feature used by DirectStorage.
  • state: Queries the current Bypass I/O state of the specified volume.
  • /v: Stands for verbose—this gives extra details beyond the default.
  • d:\: The target volume to be queried (in this case, drive D).

Also, copy what you asked, into ChatGPT. It’s quite revealing and may give you the answer you need.



Click to expand...
Thanks for your help! Removing it from the storage spaces and setting up the volume again via disk management has fixed my problem.

I did wonder if spaces was the problem but couldn't find a clear answer until ChatGPT stated. I didn't want to redownload all the games I had on there to test.

Much appreciated Antspants! Have a great day!
 

My Computer My Computer

At a glance

Windows 11Ryzen 5 7500F32Gb DDR5RTX 4070 Ti Super
OS
Windows 11
Computer type
PC/Desktop
Manufacturer/Model
MSI
CPU
Ryzen 5 7500F
Motherboard
B650M Gaming Plus
Memory
32Gb DDR5
Graphics Card(s)
RTX 4070 Ti Super
Monitor(s) Displays
Sony Bravia 8 MkII
Screen Resolution
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Hard Drives
M460 1TB
PSU
A750GL
Case
Forge M100R mATX
Cooling
Core A13 Liquid
Keyboard
Logitech K850
Mouse
Logitech M720
Internet Speed
250-400mbs
Browser
Firefox
C:, D: - NVMe ver 1.4, NTFS, no BitLocker
E: - RAM Disk
F - USB HDD

1.webp
 

My Computer My Computer

At a glance

Microsoft Windows 11 HomeIntel Core i5-13490F2 x 16 Patriot Memory (PDP Systems) PSD516G56...GIGABYTE GeForce RTX 4070 WINDFORCE OC 12G (G...
OS
Microsoft Windows 11 Home
Computer type
PC/Desktop
Manufacturer/Model
MSI MS-7D98
CPU
Intel Core i5-13490F
Motherboard
MSI B760 GAMING PLUS WIFI
Memory
2 x 16 Patriot Memory (PDP Systems) PSD516G560081 6400MT (32-37-37-74); 1.35V)
Graphics Card(s)
GIGABYTE GeForce RTX 4070 WINDFORCE OC 12G (GV-N4070WF3OC-12GD)
Sound Card
Bluetooth Аудио
Monitor(s) Displays
INNOCN 15K1F
Screen Resolution
1920 x 1080
Hard Drives
WD_BLACK SN770 250GB
KINGSTON SNV2S1000G (ELFK0S.6)
PSU
Thermaltake Toughpower GF3 1000W
Case
CG560 - DeepCool
Cooling
ID-COOLING SE-224-XTS / 2 x 140Mm Fan - rear and top; 3 x 120Mm - front
Keyboard
Corsair K70 RGB TKL
Mouse
Corsair KATAR PRO XT
Internet Speed
100 Mbps
Browser
Firefox
Antivirus
Microsoft Defender Antivirus
Other Info
https://www.userbenchmark.com/UserRun/66553205
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