Command line tool to write protect disk volumes in Windows XP and Windows Server 2003.


See warranty.


Current Version

Version 1.0.0 - August 8, 2004

Modification(s) from previous version

Security Requirements

You must be an administrator on the local machine to modify the read-only state of a disk volume.


C++. Compiled with Borland Builder 6.0

Source Code Availability



So there is this new functionality built into Windows XP and Windows 2003 that allows for configuring arbitrary fixed disk volumes to be write protected but no tools currently anywhere to do this. I caught wind of this new functionality on the ACTIVEDIR.ORG listserv and started digging into it... Sure enough the functionality is there and all you need to add to your normal Platform SDK for Windows programming is the DDK file ntddvol.h. No extra libraries, nothing. 


You do not have to supply the email address. I would like you to fill that in though so that I have an idea on how popular a tool really is. If I see 1000 downloads with 900 different email addresses I know it is more widespread than one that has 1000 downloads and 200 different email addresses because the same person needed to keep downloading it for some reason.

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Version History

As seen in


    Download and type WriteProt /?

See current usage screens