"USB Virtual Machine Emulation" Related Articles
How to boot from a USB Flash Drive in VirtualBox. This process will allow you to run your Portable Linux from the USB Flash Drive or external hard drive while still running from a Windows, Linux, or Mac OS X Host. By default VirtualBox does not support USB Boot. However, this is easily attainable by mapping a virtual machine (.vmdk file) to the USB Drive.
Portable VirtualBox was an unofficial Portable Wrapper for Virtual Box, created by Micha. An improved version is also offered by Tibo, the author of the LiLi USB Creator. VirtualBox is officially a product of Oracle. It is an emulator or virtual machine. Often you'll find it used to run various Operating Systems via Disk Images, ISO files and CD or DVDs as a guest OS from within another Host Operating Environment. By using Micha/Tibo's portable wrapper, Virtual Box can be stored and run entirely from a USB device.
Note: You can also use Tibo's Portable VirtualBox to launch a YUMI MultiBoot Flash drive from within Windows.