it is probably write protected, or protected from change in some way. 
Find out what protections it has and then remove them ....start with
Attrib -s -h -r
or whatever is required... then don't forget to put back the 
protection when you finish.

At 09:07 AM 1/29/2014, you wrote:
>I have written the following commands to a batch file:
>if exist "C:\windows\system32\drivers\file.sys"
>rename "C:\windows\system32\drivers\file.sys" "file.wassys"
>
>else
>rename "C:\windows\system32\drivers\file.wassys" "file.sys"
>I run it as administrator, and I've also typed it into the terminal in
>admin mode. Neither one does anything, no errors or prompts, nothing. I
>know that the file exists and will for a long time. I've written a few
>variants trying to change the working directory first, but they didn't work
>either. what am I missing? I've run the rename command alone and it worked
>fine.
>
>--
>  Blessings,
>Jacob Smith
>
>

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