Protect Your Flashdisk From autorun.inf

Let's imagine that on this example your USB disk is placed on drive G:

1. Open cmd.exe (Command Prompt)
2. Then, type
   mkdir G:\autorun.inf
3. Type
   mkdir \\.\\G:\autorun.inf\con
4. Type
   mkdir \\.\\G:\autorun.inf\con\aux
5. Type
   mkdir \\.\\G:\autorun.inf\con\aux\nul
   

Now, your flashdisk safe for autorun.inf!!!
Why?
A virulent computer will try to create a autorun.inf on the root of the pendisk but as a folder already exists this operation won't be possible. Some virus might try to delete this folder, but since we create new subfolder con, aux, and nul - it will be somewhat safer.