Scenario: Snow Leopard (Mac OSX) as host, Ubuntu 9.10 as guest (Virtual Box virtualization). I want to share files from Leopard to Ubuntu. Create a shared folder in VirtualBox — Ubuntu guest settings Create mount directory in ubuntu sudo mkdir /mnt/Downloads Mount share (created in step one) sudo mount.vboxsf Downloads /mnt/Downloads/ URL: http://blogs.sun.com/tao/entry/virtual_box_shared_folder_between