Справочник Пользователя для National Instruments TPC-2512

© National Instruments Corporation

The TPC-2512 supports the Windows XP Embedded platform (commonly 
abbreviated XPe), which is a componentized version of the Windows XP 
Professional edition. This appendix explains the version information and 
the EWF utility for Windows XP Embedded.

You can access the version information by selecting Start»All Programs»
Utilities.

The version information states the current XPE runtime information 
including hardware platform, version, build number, release date, XPE 
QFEs installed in the component database, and Windows XP Pro patches 
installed.

Enhanced Write Filter (EWF) provides an upper filter in the storage device 
driver stack that redirects disk write operations to volatile (RAM) or 
nonvolatile (disk) storage. EWF protects a volume from write access and 
offers 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.

•

Prolongs the life span of write-sensitive storage, such as 
CompactFlash.

To disable/enable EWF, go to Start»All Programs»Utilities and select the 
EWF tab. The default setting is disabled.

When EWF is enabled, the 

C:

 partition is protected from any disk writing. 

In this mode, any changes on the 

C:

 partition (including modifications to 

files or the registry) are redirected to memory. Thus, these changes are 
discarded in the next system startup. You can manually enable this mode 
after finishing all system changes such as installing your applications or 
adjusting system settings.