The GUIDE at http://www.doom9.org/index.html?/mpg/ifoedit-basic.htm was just updated on 11/20/02.

Split a DVD to 2 DVD-Rs
If a DVD-9 is smaller than 2 DVD-5s, why not simply split up a movie and put it onto 2 DVD-Rs? Well, for quite a while that couldn't be done but thanks to IfoEdit and WZ_man from my forum it's now possible. IfoEdit 0.89 has added an automatic split feature so if you read this guide before chances are you will see something completely different This guide is based on a document by Derrow.

You'll need the following software in this guide:

IfoEdit
ImgTool
DVD Decrypter

Table of content:

1: Rip the DVD
2: Split the DVD
3: Adjust the start point of the 2nd chapter
4: Make the disc region free
5: Remove User option prohibitions
6: Final sector adjustments
7: Burn the DVD