Проблемы с запуском 64-битных виртуальных машин в VBox даже с 64-разрядной ОС

Попробуйте xdg-open <your-file>.

   xdg-open opens a file or URL in the user's preferred application. If a
   URL is provided the URL will be opened in the user's preferred web
   browser. If a file is provided the file will be opened in the preferred
   application for files of that type. xdg-open supports file, ftp, http
   and https URLs.