It shows the USB disk path, note it down since we need to use it later. Open the Terminal ( Go – Utilities- Terminal) and type mount Because we need to use the disk path in the next command. VirtualBox Boot from USB in Macġ) Attach the bootable USB disk and find out the disk path. VirtualBox has a hidden feature to enable this USB boot support.īasically, we need to create a VMDK file based on the attached USB disk and mount the VMDK as virtual machine’s first bootable disk and boot it. Nowadays, most of the PC utilities and Operating Systems have the feature to create a portable and bootable USB disk which can be used in varies ways. Oracle VirtualBox is one of the best and free desktop virtualization software which allows running multiple Operating Systems on the single computer.