How much room does the lead-in, lead-out and Table of Contents take up? Was thinking about using 7-Zip or TrueCrypt to backup files and wanted to know the max I could fit on a DVD. Some say use 4400MB or 4464MB for a single layer DVD. The only number I have fount for dual layer DVD is 8124MB. Does anyone know the exact size the lead-in, lead-out and Table of Contents take up? Them 3 is what is considered the "safe limit" right? Ty.