We have a IOMEGA 120GB External Hard Drive with FireWire port. It has 2 images, one for our INtel MacBooks and the other for our iBooks with the G4 processor. Images are basically all the programs and such that restore a malfunctioning laptop to the manufacturers setup as though it was never touched. If the problem is a hardware issue we send the laptop out. My question is: We have an extra external hard drive with a firewire port. How do you take these 2 images (listed as .dmg) and copy it, to put it on the other external hard drive so we have 2 external hard drives that have the images.