rem and subst from MS-DOS

hello everyone: i need some ideas for something.
i want to simulate subst and rem commands from MS-DOS, into c/c++ or php.
i don't know where to start.

for example i have the next code in notepad:

Code:

rem s, r, t, u, z

 subst s:  D:\Movies
 subst r:  D:\Music
 subst t:  D:\Games
 subst u:  D:\Pictures
 subst z:  D:\Backup

it creates s, r, t, u, z partitions with the same size like D, but with the content from the files specified. And disappear after a restart.
i saved him like developments drivers.bat.
All this thing like folders/names/number of them/partition D, you know them from "outside".
i want to make something which don't know this, just search them and then make the virtual partitions.
i hope you understand what i want to do, and i'm sorry for my english
some ideas please?

 

First off, rem doesn't do anything. It just denotes a commented line, so there is no need to copy that over.

Secondly, the easiest way is probably going to be to have your C++ app run the batch file. The alternative way of doing it looks like it will be quite a bit more work. Here are some links:

http://stackoverflow.com/questions/2036985/how-can-i-develop-a-virtual-drive
http://stackoverflow.com/questions/1096788/how-to-create-a-virtual-windows-drive