Demo file download & introduce

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== EWF Overview (System protect function)==
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== EWF in WES ==
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Please refer to the [http://tprd.info/lexwiki/index.php/EWF_Module EWF_module].
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The Enhanced Write Filter (EWF) protects a volume from write access. EWF provides the following benefits:
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* Write-protects one or more partitions on your system
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* Enables read-only media, such as CD-ROM or flash, to boot and run
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EWF can be deployed on a variety of media types and configurations. The two major components for EWF are the EWF Overlay and the EWF Volume:
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* EWF Overlay:
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EWF protects the contents of a volume by redirecting all write operations to another storage location. This location is called an overlay. An EWF overlay can be in RAM, or on another disk partition. An overlay is conceptually similar to a transparency overlay on an overhead projector. Any change that is made to the overlay affects the picture as it is seen in the aggregate, but if the overlay is removed, the underlying picture remains unchanged.
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* EWF Volume:
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In addition to the EWF overlay, an EWF volume is created on the media in unpartitioned disk space. This EWF volume stores configuration information about all of the EWF-protected volumes on the device, including the number and sizes of protected volumes and overlay levels. Only one EWF volume is created on your device, regardless of how many disks are in the system. If your media does not support multiple partitions, you can save the EWF configuration information in the system's registry.
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There can be only one EWF volume on the system. However, there can be more than one protected volume, and it is possible to have some volumes that are protected by disk overlays while others are protected by RAM overlays.
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EWF Mode EWF Overlay Location EWF Volume Location Description<br>
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Disk On disk Created on disk in unpartitioned space EWF stores overlay information in a separate partition on the
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system. Because the overlay is stored in a nonvolatile location,
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the EWF overlay information can persist between reboots.
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Use EWF Disk types on a system if you want to maintain the state of the system<br>
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Ram Reg In Ram In system registry RAM Reg overlays store overlay information in RAM. However, the configuration
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information about EWF is not stored in a separate EWF volume, but within the registry.<br>
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== FAQ ==
== FAQ ==

Revision as of 16:36, 18 November 2010

Contents

Production Instruction

1.Please format the storage first (ex. CF card). You can follow below steps(1~3) to create a boot storage device of NTFS (recommend).
If need to boot in FAT32 format. Please using Windows XP Embedded tool "bootprep"

2. Please copy the files to the pre-format storage device (ex. CF card) which can be used to switch on the machine and then please re-switch on the machine in Target device.

By doing this, you can get into XP-Embedded First Boot Agent (FBA) and decompress files and structure an operating system.

Download Request Form as below if you would customize your own Windows Embedded Standard(XPe)

Download Request Form and seclect function items to customize XPE or get full function XPE in File download region.

   *Request Form (ENG)

   *Request Form (CHS)

File download

1.Intel

2.VIA

UID: sales PWD: sales

Check basic component list in Standard image

Install XPE system in the CF card procedure

advance preparation

   XPE system or download Demo version from above 
   Download UDFprep tool
   CF card and USB card reader

Procedure

1.Use the USB card reader to read CF card and find drive letter of CF crad in My Computer(drive letter = G:)

Image:drive_letter.jpg

2.Input command to Format a boot XPE storage device in CMD windows 

   UFDprep /ntfs /y <drive letter>

3.Format complete

Image:format_cmplete.jpg

4.To see hide file 

   Tools menu in Windows Explorer->Folder Options->View tab->Hidden files and folders->click Show hidden files and folders


5.Decompression and copy all file to CF card



EWF in WES

Please refer to the EWF_module.

FAQ

Q1. If customer purchases built-in XPE software, will LEX provide the licensed CD?

Ans:

Basically, unlike XP system on PC, there's no CD installation for XPE.

It was created by a platform builder called Target Designer (TD) in image file format which contains all necessary configurations.

Once the image file was copied to the target HDD, it will initiate the FBA process (First Boot Agent) to configure the system as XPE when first boot

(it's more like unzipping the image file to be system files)

The license was entered into TD prior starting to create the image, so there's no license require afterward.


There are 2 ways to check the XPE license:

1.After entering Windows, you shouldn’t see “Microsoft Windows XP Embedded” term on the bottom right of your desktop if you are using original version.

2.The license sticker on the case ( Microsoft usually judge the license legality by the sticker)

Patch File:
Defect:

N/A

Asker:

Larisa - Thursday, August 07, 2008 5:31 PM

Provider:

Denny - Thursday, August 07, 2008 5:58 PM

How to use EWF in XPe

Ans:

1.

Please refer to the EWF_module.

2.

Use the command ewfmgr c: -Disable in CMD to disable the EWF.

Use the command ewfmgr c: -Enable in CMD to disable the EWF.

And then reboot.

Patch File:

N/A

Defect:

N/A

Asker:

Sato yoichro 2009/06/25

Provider:

Denny 2009/06/25

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