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.
3. Right click DVD disc drive and then select âOpenâ. Select all files there and copy them for pasting to USB drive. To copy DVD folder or ISO image file, right click the folder or ISO file and then select Copy option, go to USB drive and right click on a blank place to select âPasteâ.Or you could select âSend toâ option to send DVD content to USB drive.se free or commercial DVD ripping software to create a computer file copy of your DVD and then transfer this file to a USB flash drive. You can then enjoy movies and TV shows anywhere you have access to a computer. 1  Why Put DVD onto USB. 2  Solution 1: Directly Copy DVD to USB.