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Unloading Dynamic VxD

Posted on 2002-05-24
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What is the simplest method/approach to unload a dynamic VxD in a Windows 9X program? I did not write the program, but I do know the path to the VxD and the VxD file name. I prefer a utility/tool/program, but I am willing to explore more difficult possibilities, such as writing another VxD to unload it. The VxD loads on startup in the c:\windows\system\iosubsys directory, and remains loaded until shutdown. And I want to be able to unload it on-the-fly. How can I do it? Is there an assembly routine someone could post here, where all I would have to do is go into debug in DOS, type out the commands and fill in the VxD module name? There is no device ID, since it is dynamic.

Is there a user-friendly program to unload VxD's? Any VxD? When all I know is the path and VxD file name? That's what I really want.
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Question by:david323
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by:cookre
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by:cookre
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And here's an EXE that claims to do it:
http://www.techsoftpl.com/vxd/dbgterm.htm
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by:nico5038
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No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:
 - PAQ'd and pts removed
Please leave any comments here within the
next seven days.

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER !

Nic;o)
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by:david323
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I never was able to find a user-friendly program to do this. I had to code an assembly routine to hook/send a message to DeviceIoControl API (VxDCall0). This did the trick.
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Hi david323,

Thanks for returning to the Q.
Looks like you solved the Q yourself, so I'll change my recommandation to:
 - PAQ'd and pts refunded

Nic;o)
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