In my previous blog post you know how to make JunOS vdi to install into Virtuabox. Some of you may try to run it fromVBox main window. When ever you try to run JunOS from VBox window you may encounter below error message and nothing happen. BTX loader 1.00 BTX loader is 1.02 Don't run it form the VirtuaBox main windows. Please go to my previous blog post .