CDI file is 701MB - do I need to use an 80min CD-R?

[i2mental]

Hmmmm.... The size of the CDI does not necessarily mean the size of what will be written on the CD. It's smaller than 701MB. How small it is I'm not sure. I've never burnt that one. I'm just guessing that it will work on 650 meg CDs. But I guess you'll never know unless you try!