請先看『使用說明』

From LEXWiKi

Revision as of 11:35, 16 October 2009

Production Instruction

1. Please format the storage device first (ex. CF card). If that is FAT32 after format please switch on the machine by using Windows XP Embedded tool called "bootprep" (in DOS mode).

You don't need to do this if it is NTFS after format.

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)

• Request Form (ENG)
  

• Form.doc Request Form (CHS)
  

File download

1.Intel

• 852 Series

• 270 Series

• 945 Series

2.VIA

• CX700 Series

• CN700 Series

UID: sales

PWD: sales

Check basic component list in Standard image

EWF Overview (System protect function)

The Enhanced Write Filter (EWF) protects a volume from write access. EWF provides the following benefits:

• Write-protects one or more partitions on your system
• Enables read-only media, such as CD-ROM or flash, to boot and run

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:

• EWF Overlay:

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.

• EWF Volume:

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.

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.

 EWF Mode   EWF Overlay Location          EWF Volume Location                               Description
 
   Disk           On disk         Created on disk in unpartitioned space   EWF stores overlay information in a separate partition on the 
                                                                           system. Because the overlay is stored in a nonvolatile location, 
                                                                           the EWF overlay information can persist between reboots.
                                                                           Use EWF Disk types on a system if you want to maintain the state of the system
 
  Ram Reg         In Ram                  In system registry               RAM Reg overlays store overlay information in RAM. However, the configuration 
                                                                           information about EWF is not stored in a separate EWF volume, but within the registry.
 

FAQ

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

How to protect file with EWF in XPe

如何在 Target Designer 中加入 EWF 元件 ?

   1. Enhanced Write Filter Component (主要元件之一, 包含對EWF的設置與檔案)
   2. EWF NTLDR Component             (修改過的 NT Loader, 使其可以從EWF保護中的磁區開機)
   3. EWF Manager Console Application (包含ewfmgr.exe, 任何有關EWF的指令都是經由ewfmgr.exe來下命令)
   4. Enhanced Write Filter API       (EWF的API, 讓ap可以透過api對ewf作存取控制)

 Number of Protected Volumes               設定 EWF volume 保護數量. 範圍: 1-9.
 Maximum Number of Overlay Levels          設定最大 overlay level. 範圍: 1-9.
 EWF Partition Size in KBytes              設定 EWF Partiotion size.
 Disable Background Disk Defragmentation   Yes/no 啟動或關閉 Background disk defragmentation
 Enable HORM                               Yes/no 啟動或關閉 HORM
 Protected Volume Prev/Next Buttons        針對每一個 EWF Volume做設定, 選擇前一個或後一個volume 
 Start EWF Enabled                         Yes/no 啟動或關閉 EWF 保護
 Enable Lazy Write                         Yes/no 啟動或關閉 Lazy Write
 Disk Number                               指定該 EWF volume 在第幾個硬碟
 Partition Number                          指定該 EWF volume 在第幾個磁區
 Overlay Type                              選擇 EWF 保護的模式(Disk, Ram, Ram(Reg))
 Optimization Option                       選擇 EWF 最佳化模式