HP 4320t Mobile manual Using the Enhanced Write Filter configuration interface, All

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When you enter the ewfmgr [boot command] syntax, use the following commands in the boot command variable of the command line:

-all

Displays information about all protected volumes and performs a command, such as disable, enable, and commit, on each volume, if specified.

-commit

Commits all current level data in the overlay to the protected volume, and resets the current overlay value to 1. You can combine -commitwith the -disablecommand to commit and then disable.

-disable

Disables the overlay on the specified protected volume.

-enable

Enables the EWF so that data written to the protected media is cached in the overlays. The current overlay level becomes 1 as soon as EWF is started, and a new overlay is created at level 1.

-commitanddisable

Commits data in the overlay upon shutdown and disables EWF after the system reboots.

Using the Enhanced Write Filter configuration interface

In addition to the DOS command-line tool, Windows Embedded includes an EWF configuration interface. You can access the EWF interface by using the Windows Control Panel.

To access the EWF interface, follow these steps:

1.Log on as an administrator.

2.Select Start > Control Panel.

3.Select HP WriteFilter Configuration.

The EWF interface includes the following buttons:

Enable/Disable EWF

Enables the Enhanced Write Filter so that data written to the protected media is cached in the overlays. Disables the overlay on the specified protected volume.

Overlay Configuration

Displays the overlay information and is a combination of the information supplied when executing ewfmgr.exe c: -Descriptionand ewfmgr.exe c: -Gaugefrom the DOS prompt.

Clear Boot Command

Clears the boot command from the DOS prompt.

Commit Data to Volume

Commits all current-level data in the overlay to the protected volume, and resets the current overlay value to 1.

14 Chapter 2 HP Write Filters

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Contents HP 4320t Mobile Thin Client Product notice Safety warning notice Iv Safety warning notice Table of contents Applications Multimedia Inserting a digital card Removing a digital card Hardware upgrades Page Identifying the hardware DisplayTop Pointing devicesLights Buttons, switches, and speakers Keys Fn keyFront Environmental NoticesRight side Left sideWireless antennas BottomIdentifying the labels Component Description Using the File-Based Write Filter command line utility HP Write FiltersFile-Based Write Filter Using the File-Based Write Filter configuration interface Using the File-Based Write Filter status utilityUsing the Enhanced Write Filter command line utility Enhanced Write FilterUsing the Enhanced Write Filter configuration interface AllUsing the Enhanced Write Filter status utility Configuration Local drivesDrive Z Drive CUser accounts Mapping network drivesRoaming profiles Creating a new user accountPage Applications Remote Desktop ConnectionHP Remote Graphics Software RGS TeemTalk Terminal EmulationHP ThinState Capture Microsoft Internet Explorer Windows Media PlayerHP ThinState Deploy Using pointing devices Using the keyboardPointing devices and keyboard Switching the screen image Displaying system informationDecreasing screen brightness Increasing screen brightnessUsing the keypads Using the embedded numeric keypad Enabling and disabling the embedded numeric keypadUsing an optional external numeric keypad Switching key functions on the embedded numeric keypadPower Power control and light locationsSetting power options Using power-saving statesShutting down the computer Initiating and exiting SleepUsing battery power Using the Power MeterDisplaying the remaining battery charge Inserting or removing the batteryCharging a battery Managing low battery levels Identifying low battery levelsResolving a low battery level Conserving battery power Storing a batteryDisposing of a used battery Using external AC power Connecting the AC adapterPage Using multimedia hardware Using the audio featuresMultimedia Using the video features Using the audio-in microphone jackUsing the audio-out headphone jack Adjusting the volumeUsing the Hdmi port Using multimedia software Opening preinstalled multimedia softwareUsing multimedia software Preventing playback disruptions Wireless About integrated wireless devicesUsing wireless controls Using WlanSetting up a Wlan Connecting to a WlanUsing wireless security features Identifying a Wlan deviceUsing a modem Connecting a modem cableModem and LAN Connecting a country- or region-specific modem cable adapter Selecting a location setting Adding new locations when travelingSolving travel connection problems Viewing the current location selectionSet the modem to ignore dial tones Connecting to a local area network Using passwords SecurityProtecting the computer Setting passwords in Windows Using administrator and user passwordsAutomatic logon Manual logonSetting passwords in Computer Setup Using a setup passwordAdministrator logon Managing a setup passwordInstalling a security cable Entering a setup passwordConnecting hardware Using a USB deviceConnecting a USB device Securing USB portsUsing the USB Storage Options utility Using Media Card Reader cards Inserting a digital cardRemoving a digital card Using ExpressCards Configuring an ExpressCardInserting an ExpressCard Removing an ExpressCard Hardware upgrades Identifying installed drivesUsing optical drives select models only Handling drivesInserting an optical disc CD or DVD Removing an optical disc CD or DVDWhen the disc tray opens When the disc tray does not openUsing external drives Using optional external devicesUsing an optional external MultiBay or external MultiBay Inserting and replacing memory modulesPage Page Page Page Page Page MultiBoot About the boot order deviceEnabling boot devices in Computer Setup Considering boot order changes Choosing MultiBoot preferencesSetting a new boot order in Computer Setup Dynamically choosing a boot device using the F9 promptSetting a MultiBoot Express prompt Entering MultiBoot Express preferences Computer Setup Starting Computer SetupUsing Computer Setup Navigating and selecting in Computer SetupComputer Setup menus Restoring factory settings in Computer SetupFile menu System Configuration menu Security menuComputer Setup menus Computer Setup Cleaning the display Cleaning the keyboardRoutine care Traveling and shippingPage Index USBHdmi Hdmi USB
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