NvME drives do not support DirectDrive


rzn6jw

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Running Windows 11 Pro v22H2 build 22621.1555. I have 2 2Tb NvME drives, one as my C:/ drive and one as my game drive. I wanted to check if those drives supported DirectDrive so I issued the command: fsutil bypassIo state c:\ and received the following:

BypassIo on "c:\" is not currently supported
Status: 506 (At least one minifilter does not support bypass IO)
Driver: PDFsFilter
Reason: The specified minifilter does not support bypass IO.
Storage Type: NVMe
Storage Driver: Not BypassIo Compatible

It appears that PDFsFilter.sys is a problem. Can I safely delete this file or will that create issues?

Thanks.
 

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Running Windows 11 Pro v22H2 build 22621.1555. I have 2 2Tb NvME drives, one as my C:/ drive and one as my game drive. I wanted to check if those drives supported DirectDrive so I issued the command: fsutil bypassIo state c:\ and received the following:

BypassIo on "c:\" is not currently supported
Status: 506 (At least one minifilter does not support bypass IO)
Driver: PDFsFilter
Reason: The specified minifilter does not support bypass IO.
Storage Type: NVMe
Storage Driver: Not BypassIo Compatible

It appears that PDFsFilter.sys is a problem. Can I safely delete this file or will that create issues?

Thanks.
Do you mean DirectStorage? This only works with the generic Microsoft NVMe driver, it won't work with manufacturer drivers, such as Samsung
 

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Sorry, fumble fingers..... So what is the generic MS NvME driver? Can I delete PDFsFilter.sys?
 

My Computer My Computer

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Win 11Pro v25H2 build 26200.7171AMD Ryzen 7 9800X3D64G DDR5 6000ASUS RTX 4070 Ti Super OC
OS
Win 11Pro v25H2 build 26200.7171
Computer type
PC/Desktop
Manufacturer/Model
DIY
CPU
AMD Ryzen 7 9800X3D
Motherboard
Gigabyte X670 Aorus Elite AX
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64G DDR5 6000
Graphics Card(s)
ASUS RTX 4070 Ti Super OC
Sound Card
Soundblaster Z SE
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LG 24"
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3480 x 2160
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C: drive SOLIDIGM P44 PRO 2TB SSD
D: drive SOLIDIGM P44 PRO 2TB SSD
H: drive Samsung 970 EVO Plus 2TB SSD
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Sorry, fumble fingers..... So what is the generic MS NvME driver? Can I delete PDFsFilter.sys?
How was it installed? Deleting the driver would likely cause your PC to not boot, but if the driver can be uninstalled it SHOULD revert to the generic MS driver. MAKE A SYSTEM IMAGE BACKUP BEFORE ATTEMPTING TO REMOVE THE BOOT DRIVE STORAGE DRIVER!
 

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Windows 11 Pro 25H2 (RP channel)AMD Ryzen 7 9800X3D 8-core64GB Corsair Titanium 6000/CL30MSI Suprim 5080 SOC
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Windows 11 Pro 25H2 (RP channel)
Computer type
PC/Desktop
Manufacturer/Model
MSI
CPU
AMD Ryzen 7 9800X3D 8-core
Motherboard
MEG X870E Godlike
Memory
64GB Corsair Titanium 6000/CL30
Graphics Card(s)
MSI Suprim 5080 SOC
Sound Card
Soundblaster AE-9
Monitor(s) Displays
ASUS TUF Gaming VG289Q
Screen Resolution
3840x2160
Hard Drives
Samsung 9100 Pro 4TB (gen 5 x4, system drive/games)
Samsung 990 Pro 2TB
Samsung 980 Pro 2TB
Samsung 870 Evo 4TB
Samsung 870 Evo 2TB
Samsung T9 4TB
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Seasonic PX-2200
Case
Bequiet! Dark Base Pro 901
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Noctua NH-D15S Chromax black
Keyboard
Logitech G915 X (wired)
Mouse
Logitech G903 with PowerPlay charger
Internet Speed
900Mb/sec
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Microsoft Edge
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Windows Defender
Have Macrium Reflect for that very reason. It's saved my butt countless times. Will try and post the results soon. Going to have to go into safe mode to try this so it'll be a while.
 
Last edited:

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ASUS RTX 4070 Ti Super OC
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Have Macrium Reflect for that very reason. It's saved my butt countless times. Will try and post the results soon. Going to have to go into safe mode to try this so it'll be a while.
Good luck!
 

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Windows 11 Pro 25H2 (RP channel)AMD Ryzen 7 9800X3D 8-core64GB Corsair Titanium 6000/CL30MSI Suprim 5080 SOC
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Windows 11 Pro 25H2 (RP channel)
Computer type
PC/Desktop
Manufacturer/Model
MSI
CPU
AMD Ryzen 7 9800X3D 8-core
Motherboard
MEG X870E Godlike
Memory
64GB Corsair Titanium 6000/CL30
Graphics Card(s)
MSI Suprim 5080 SOC
Sound Card
Soundblaster AE-9
Monitor(s) Displays
ASUS TUF Gaming VG289Q
Screen Resolution
3840x2160
Hard Drives
Samsung 9100 Pro 4TB (gen 5 x4, system drive/games)
Samsung 990 Pro 2TB
Samsung 980 Pro 2TB
Samsung 870 Evo 4TB
Samsung 870 Evo 2TB
Samsung T9 4TB
PSU
Seasonic PX-2200
Case
Bequiet! Dark Base Pro 901
Cooling
Noctua NH-D15S Chromax black
Keyboard
Logitech G915 X (wired)
Mouse
Logitech G903 with PowerPlay charger
Internet Speed
900Mb/sec
Browser
Microsoft Edge
Antivirus
Windows Defender
Sorry, fumble fingers..... So what is the generic MS NvME driver? Can I delete PDFsFilter.sys?
Do you have Pefectdisk installed? This is a storage filter driver for that program. You should not remove it manually, but by uninstalling PerfectDisk. It may cause issues with disk i/o otherwise.

If you have to ask, then you probably already have the Micosoft nvme driver. It is just all storage i/o filter drivers have to support the bypass as well, and this one apparently does not.
 

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No, I don't have PerfectDisk installed. Any other programs that might have installed it? I don't ever remember installing PerfectDisk in the past but if it was and then uninstalled, could it have left this file?
 

My Computer My Computer

At a glance

Win 11Pro v25H2 build 26200.7171AMD Ryzen 7 9800X3D64G DDR5 6000ASUS RTX 4070 Ti Super OC
OS
Win 11Pro v25H2 build 26200.7171
Computer type
PC/Desktop
Manufacturer/Model
DIY
CPU
AMD Ryzen 7 9800X3D
Motherboard
Gigabyte X670 Aorus Elite AX
Memory
64G DDR5 6000
Graphics Card(s)
ASUS RTX 4070 Ti Super OC
Sound Card
Soundblaster Z SE
Monitor(s) Displays
LG 24"
Screen Resolution
3480 x 2160
Hard Drives
C: drive SOLIDIGM P44 PRO 2TB SSD
D: drive SOLIDIGM P44 PRO 2TB SSD
H: drive Samsung 970 EVO Plus 2TB SSD
PSU
Corsair RM850X
Case
GameMax
Cooling
NZXT Kraken Elite 360 RGB 2024
Keyboard
Corsair
Mouse
Razor
Internet Speed
Gigabyte
Browser
Firefox
Antivirus
Norton 360
No, I don't have PerfectDisk installed. Any other programs that might have installed it? I don't ever remember installing PerfectDisk in the past but if it was and then uninstalled, could it have left this file?
only PerfectDisk.

Raxco was notified of the need to update this driver 12 months+ ago, and have done nothing.

Anyone coming across this, if you don't use Optiwrite you can disable the filter in Autoruns.
 
Last edited:

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