Drivers In Cmd
Remove Drivers Cmd

You can press Windows + R, type cmd, and hit Enter to open Command Prompt window. If you want to open elevated Command Prompt, you should press Ctrl + Shift + Enter. After the Command Prompt opens, you can type the drive letter of the desired drive, followed by a colon, e.g. C:, D:, and hit Enter. Here are the steps to update the driver in your Windows 10 using command prompt: Go to the Start button (Windows icon), in the bottom left of your desktop. Now, type Command Prompt in the search bar. Then, right-click on the result and choose Run as administrator from the right-click menu and open the Command Prompt with admin rights.

Manage MiniFilter drivers. Load a Filter driver, Unload a Filter driver, List filter information, List all instances or the instances associated with a Filter or Volume, List all volumes (including the network redirectors), Attach orDetach a filter from a Volume.

FLTMC requires an Elevated command prompt (either CMD or PowerShell)

File System Minifilter Drivers

A file system filter driver (Minifilter) is an optional driver that adds value to or modifies the behavior of a file system.

These filter drivers process all filesystem activity including background processes. Typical uses are: encryption software transparently encrypting new files. Enforcing file quotas and most commonly anti-virus software scanning file activity.

A malicious rootkit infection, may obfuscate its presence by installing a minifilter driver which intercepts and filters calls between other (legitimate) drivers and the system. It is therefore good practice to document the known minidrivers installed on your key systems.

The FLTMC command allows the option to display existing filters and delete malicious ones.

Attaching a filter to a Volume

The instanceName is optional if an altitude is provided If no altitude is provided, the necessary keys must already exist in the registry to describe the altitude for the given name.

The altitude is optional if an instanceName is provided. If specified, this new instance is placed at this explicit altitude. If a name is specified as well, the new instance will be given the name specified.

If the attachment is successful, an Instance Name will be displayed to identify the instance created by this attachment.

Detaching a filter from a Volume

The filterName is the name for the Filter that is used by the driver to register and to load the Filter using this command line.

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The instanceName is the identifier returned by the attach command.
If no instanceName is given, the default instance for the Volume specified will be removed.

Altitude

Minifilters are assigned a specific altitude by Microsoft. This will sit within a range that is specific to the function of the minifilter.
e.g. Anti-Virus minifilters are assigned an altitude between 320,000 and 329,999.
and encryption minifilters are assigned an altitude between 140,000 and 149,999.

For file Writes, Altitudes are processed in descending order.
For file Reads, Altitudes are processed in ascending order.

So when writing anti-virus is handled before encryption, but when reading decryption is handled before anti-virus.

Legacy filter drivers do not use the minifilter model, this means they don’t slot into place based on their altitude. For interoperability with legacy filter drivers, the filter manager can attach filter device objects to a file system I/O stack in more than one location [example]. However you should still consider replacing legacy filters with minifilters.

Offloading Reads and/or Writes on NTFS drives

Starting with Windows 8, a filter may specify offload capability .
FLTMC instances will display the Supported Features (SprtFtrs)
1 = FSCTL_OFFLOAD_READ
2 = FSCTL_OFFLOAD_WRITE
So 3 = Offload Read + Write are supported.

Common minifilters (System32Drivers)

WdFilter.sys – Windows Defender
storqosflt.sys - Storage QoS Filter Driver
luafv.sys – UAC File Virtualization
npsvctrig.sys – Named Pipe Service Trigger Provider
FileCrypt.sys - Windows sandboxing and encryption
FileInfo.sys – FileInfo Filter Driver (SuperFetch / ReadyBoost)
wcifs.sys - File System Filter
Wof.sys – Windows Image File Boot

Examples

Display the installed filters:

C:> FLTMC

Display the instance names, altitude and supported features:

C:> FLTMC instances

“A complex system that works is invariably found to have evolved from a simple system that worked. The inverse proposition also appears to be true: A complex system designed from scratch never works and cannot be made to work.' ~ John Gall

Related:

Load Order Groups and Altitudes for Minifilter Drivers - Docs.Microsoft.com
FSUTIL - File and Volume utilities.

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Remove Drivers Cmd

If you have an Aladdin MemoHASP hardware key and PTW refuses to start or the hardware key light continues to blink, you must manually install the drivers from the command prompt.
Solution: Complete the following steps:
Step 1 – Remove the USB key from the computer and uninstall any previous MemoHASP drivers. It can be uninstalled from “ADD/REMOVE Programs” in the Windows Control Panel.
Step 2 – Download the latest sentinel HASP command line drivers from the following link: http://www.aladdin.com/support/hasp-srm/enduser.aspx The file name is Sentinel_HASP_Run-time_ cmd_line.zip (9.61 MB)
Step 3 – Extract the contents inside the *.zip file to a folder (Example; C:Key)
Step 4 – Click on the Windows “Start” menu, navigate to Run, and type in CMD. If you are running Windows Vista or 7, you can bypass going to the Run command and type in CMD in the Search box. Click on “OK” or press Enter. Navigate to the C:Key by entering “cd C:Key” and press Enter.
Step 5 – Type in 'haspdinst -fr -purge' and press Enter. Wait for the following message:
Step 6 – Type in 'haspdinst -i -kp' and press Enter. (If this command fails, write 'haspdinst -i -fi')
Wait for the following message:
Exit out of the command prompt.
Remember to restart the computer after the above procedure. The USB key can be plugged back in
after the computer has booted up.

Drivers CMD