UWF_Servicing (Industry 8.1)

7/8/2014

Review the syntax, members, and examples of the UWF_Servicing WMI provider class for Windows Embedded 8.1 Industry (Industry 8.1).

This class contains properties and methods that enable you to query and control Unified Write Filter (UWF) servicing mode.

Syntax

class UWF_Servicing {
    [key, read] boolean CurrentSesson;
    [read] boolean ServicingEnabled;

    UInt32 Enable();
    UInt32 Disable();
    UInt32 UpdateWindows(
        [out] UInt32 UpdateStatus
    );
};

Members

The following tables list the methods and properties that belong to this class.

Methods

Method	Description
UWF_Servicing.Disable	Disables Unified Write Filter (UWF) servicing mode. The system leaves servicing mode in the next session that follows a restart.
UWF_Servicing.Enable	Enables Unified Write Filter (UWF) servicing mode. The system enters servicing mode in the next session that follows a restart.
UWF_Servicing.UpdateWindows	Calls Windows Update to download and install critical and security updates for your device running Windows Embedded 8.1 Industry (Industry 8.1).

Properties

Property	Data type	Qualifiers	Description
CurrentSession	Boolean	[key, read]	Indicates when to enable servicing. True if servicing is enabled in the current session; False if servicing will be enabled in the session that follows a restart.
ServicingEnabled	Boolean	[read]	Indicates if the system is in servicing mode in the current session, or will be in servicing mode in the next session that follows a restart. True if servicing is enabled; otherwise, False.

Remarks

This class only has two instances, one for the current session, and another for the next session that follows a restart.

Example

The following example shows how to enable and disable UWF servicing mode on a device by using the Windows Management Instrumentation (WMI) provider in a Windows PowerShell script.

$COMPUTER = "localhost"
$NAMESPACE = "root\standardcimv2\embedded"

# Define common parameters

$CommonParams = @{"namespace"=$NAMESPACE; "computer"=$COMPUTER}

# Enable UWF servicing

$nextSession = Get-WmiObject -class UWF_Servicing @CommonParams | where {
    $_.CurrentSession -eq $false
}

if ($nextSession) {

    $nextSession.Enable() | Out-Null;
    Write-Host "This device is enabled for servicing mode after the next restart."
}

# Disable UWF servicing

$nextSession = Get-WmiObject -class UWF_Servicing @CommonParams | where {
    $_.CurrentSession -eq $false
}

if ($nextSession) {

    $nextSession.Disable() | Out-Null;
    Write-Host "Servicing mode is now disabled for this device."
} 

See Also

Reference

Unified Write Filter WMI provider reference

Concepts

Unified Write Filter