Ewf Class (Standard 7 SP1)

7/8/2014

The Ewf class is used to apply settings to all volumes in the protected volume list of the Enhanced Write Filter.

The following syntax is simplified from Managed Object Format (MOF) code and includes all of the inherited properties.

Syntax

class Ewf
{
  boolean HormActivated;
};

Members

The Ewf class defines the following types of members:

• Methods
• Properties

Methods

The Ewf class defines the following methods.

Method	Description
CheckpointAll Method	Adds a new checkpoint overlay level on all protected volumes with an enabled overlay.
CommitAll Method	Commits the data from the overlay to the volumes in the protected volume list of the Enhanced Write Filter.
DisableAll Method	Disables the overlay for all volumes in the protected volume list of the Enhanced Write Filter.
EnableAll Method	Enables the overlay for all volumes in the protected volume list of the Enhanced Write Filter.
RestoreAll Method	Restores the protected volumes to the state of the previous overlay level.

Properties

The Ewf class defines the following properties.

• HormActivated

  • Data type: boolean

    Access type: Read/write

    Specifies whether HORM is active.

Requirements

Supported clients	Windows XP Embedded SP3 Windows Embedded Standard 2009 Windows Embedded Standard 7 SP1 WEPOS 1.1 SP3 POSReady 2009 Windows Embedded POSReady 7 Windows Fundamentals for Legacy PCs 7
MOF	EWFProvider.mof
Namespace	\root\Microsoft\WriteFilters