I've tried this before:https://stackoverflow.com/questions/35254852/how-to-change-the-jupyter-start-up-folder
But when I changed the start-up folder, I found that the interface is blank. The packes and all that stuff were gone. These will disappear.
These will disappear.
I want to create a shortcut under jupyter's working folder to a folder where I want to store my files, such as d:\MLDemo.
But here is a error:

What should I do about it? Or is there another way to save files somewhere else?
 
     
    