How do I show different files to different users on the same filesystem?
In Windows the filesystem is expected to present the same disk data to all users and processes. This means that you can not expose the same drive to all users and provide different file sets (or file contents) to different users. The right approaches are:
1) prevent users from accessing the file or folder if open/read request comes from certain user.
2) create different virtual drives (using different instances of Callback File System) for different users.