So some rocks are radioactive because they have radioisotopes in their nuclei. Also they may have radon gas trapped in their crystals if they are igneous rock. They could also be radioactive due to the fact that the atom of the rock is unstable.
Connecting USB Devices Manually. Choose VM > Removable Devices to connect specific USB devices to your virtual machine. You can connect up to two USB devices at a time. If the physical USB devices are connected to the host computer through a hub, the virtual machine sees only the USB devices, not the hub.
1 From within the Actions pane in Hyper-V Manager, click on Import Virtual Machines. 2  Browse to the folder you copied to the host in step #1 and click on the Next button. 3  Select the VM to be imported and click on the Next button.4  Select the type of import to perform. This can be either an exported VM, or simply the VM folder from another Hyper-V host. 2  From within the Actions pane in Hyper-V Manager, click on Import Virtual Machines. 3  Browse to the folder you copied to the host in step #1 and click on the Next button.