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File-Based Write Filter (Standard 7 Package Reference)

  • Article

7/8/2014

This package is a Feature Pack in the category Embedded Enabling Features. The name of the package as it appears on disk and for use with some command-line tools is WinEmb-File-Based-Write-Filter.

File-Based Write Filter (FBWF) enables redirection of all changes made to a protected volume to an in-memory overlay. This provides system designers with the option of discarding all changes made to a system in a manner that is transparent to user applications. This inherent feature of FBWF can also be used for booting Windows Embedded Standard 7 images from read-only flash media.

Writing to storage media may be undesirable or impossible in embedded devices. FBWF redirects all writes targeted for protected volumes to a RAM cache called an overlay.

Settings

Name

Description

BootStatusPolicy (WinEmb-File-Based-Write-Filter)

Specifies which errors are displayed if there is a failed boot or a failed shutdown.

CacheType

Specifies how the size of the overlay cache is configured.

DisableDefragSvc (WinEmb-File-Based-Write-Filter)

Specifies whether to turn the disk defragmenter service on or off.

EnableVirtualSizeDisplay

Specifies whether the user interface displays actual disk size or virtual disk size.

MaximumCacheSizeInMB

Specifies the maximum size for the overlay cache.

ProtectedVolumes (WinEmb-File-Based-Write-Filter)

Specifies all volumes that can be configured for protection by FBWF.

EnablePrefetcher (WinEmb-File-Based-Write-Filter)

Specifies whether to use Prefetch, a tool that loads application data into memory before it is demanded.

EnableSuperfetch (WinEmb-File-Based-Write-Filter)

Specifies whether to use Superfetch. Superfetch improves on Prefetch by monitoring which applications you use the most and preloading those into your system memory so that they are ready when you need them.

HideEvaluationWarning

Specifies whether to hide the evaluation copy notice during deployment.

PagingFiles

Specifies the file name of one or more page files.

DisableSR

Specifies whether to use System Restore.

Services

  • File-Based Write Filter

Dependencies

Package Dependencies

No package dependencies.

Group Dependencies

No group dependencies.

Optional Supporting Packages

No optional supporting packages.

Common Uses

Notes

See Also

Concepts

FBWF Manager

Other Resources

File-Based Write Filter (FBWF)
FBWF Installation and Configuration