Hello, I've got a LiteOn IHAS124-14 DVD writer with the latest firmware. I'm trying to backup my car's satnav disc (it's a Honda CR-V - Navteq APN2_69105 Europe-West - from 2008) but no matter what I do all I get is 'invalid disc'. Using Img Burn I have set the book type successfully to DVD-Rom and burnt using the slowest speed (4x) using Verbatim DVD+R DL discs. In addition i've tried using lite-on's own bitsetting utility. I also downloaded and tried a later 2014 version that was all setup and ready, but that had the same issue. As far as I can tell changing the booktype should be all I need. Any help would be appreciated? Thanks.