File Based Write Filter (Fbwf); Application Development - Eurotech Apollo Quick Start Manual

APOLLO Windows XP Embedded Quickstart

File Based Write Filter (FBWF)

File Based Write Filter (FBWF) is very similar to Enhanced Write Filter, except that
instead of protecting the entire flash disk, it allows the user to be selective about which
folders and files are protected, and thereby 'poke holes' in the protection for certain
folders which might require write access e.g. log files.
A command-line application called FBWFMGR is included to allow you to manage
which folders and files are excluded from the write protection offered by FBWF.
To enable FBWF open a Command Prompt and type the following:
fbwfmgr /enable
Just enabling FBWF will not be enough to protect the flash disk. You must tell FBWF
which volume it should be enabled for. To do this, type the following:
fbwfmgr /addvolume c:
If you wanted to exclude a folder called C:\logfiles, from the FBWF protection. To do
this, type the following:
fbwfmgr /addexclusion c: \logfiles
To remove the exclusion, type the following:
fbwfmgr /removeexclusion c: \logfiles
To disable FBWF, type the following:
fbwfmgr /disable
File Based Write Filter cannot be used at the same time as Enhanced Write
Filter. If both are enabled simultaneously, EWF will take priority and protect the
entire flash disk.

Application development

From an application development viewpoint, Windows XP Embedded behaves in the
same way as desktop Windows XP. This means you can use the full range of Microsoft
development tools including, for example, Visual Basic, Visual C++, and so on. The
Windows XP Professional versions of the software development and driver
Development Kits can also be used with Windows XP Embedded.
© 2007 Eurotech Ltd Issue E
Using the supplied Windows XP Embedded image
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