


If you have a USB 3.0 stick that does not work even though you have selected the USB 3.0 controller in VirtualBox, try connecting it to a USB Hub that is 2.0 and set the USB controller to 2.0 in VB settings.Use Rufus to create the bootable USB (make sure you have the MBR partition scheme selected without any of the checkboxes in the "Advanced options" section).Plug in the USB and make sure you eject it from the host (VB and the host cannot access the USB at the same time).Add a filter for the USB (needs to be the one where you want to "flash" the ISO - it will be in a list) and make sure you have USB 2.0 or 3.0 active depending on your hardware.Get Rufus and share the folder where the Windows ISO resides on the host.Install Windows in a VM and after that the VirtualBox Guest Additions.Get the Extension pack for your VirtualBox version.Get VirtualBox and install Windows in it.Provide Name, Type (Microsoft Windows), Version (your choice). Create new virtual machine by pressing Ctrl + N. I was trying to make a bootable USB in order to install Windows on another laptop that is not a Mac. After you have ISO of Windows 7, open up the VBox and follow the steps. I know I don't need any external media to install Windows on a MacBook Pro.
