Having configured a virtual machine for Ubuntu on Virtual-box on my mac air I need to install Ubuntu OS itself. I have selected the hard-drive as the primary boot device and the network as the secondary boot device, so I am not prompted to install an Ubuntu disk at boot time. It attempts to net-boot but is unable to locate Ubuntu and I cannot find anywhere in the configuration where I can explicitly specify where to find an Ubuntu image, so I assume it reverts to some default location and fails.
Has anybody out there ever successfully installed Ubuntu on virtual box on their Mac Air? What steps did you take to get it right?