Confidence votes 33. First of all you are probably a 'rent asking this and not every word in the dictionary a teen has a slang word for, so remember that and don't critcize them just because they are WAY cooler than the kids next door!
When Raw Disk Image type is not mentioned explicitly in this guide, we are referring to the Backup Disk Image. Another file format supported is ISO image. ISO images are used to store a copy of CD/DVD/Blue-ray disc in a file and stand apart from actual disk images.
Navigation system, updating and care. Contents of the main unit All map information is stored on the main unit's hard drive. There is no DVD in the unit when it is delivered. The DVDs are used for any updates to system or map information, see the instructions of the DVD's cover.