
Be sure the USB drive is the first disk in the list. If you want to install an operating system from the USB drive, you’ll need to add a hard disk later from within the virtual machine’s settings window. In other words, you can’t simply create a standard virtual machine and attach the USB device later. Note that the USB device must be the first hard disk in your virtual machine or VirtualBox won’t boot from it.


When you’re asked to select a hard disk, select Use an existing virtual hard drive file, click the button to browse for the file, and navigate to it - that’s C:\usb.vmdk if you didn’t select your own path.īoot the virtual machine and it should boot the operating system from your USB drive, just as if you were booting it on normal computer.
