Hi,
You can easily create multiple volume installation using AI. To do this go in "Media" page, "Media" tab and choose from "Volumes" button "Multiple Volumes".
Read more about how to use AI here:
http://www.advancedinstaller.com/user-guide/using.html
Regards,
Gigi
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Gheorghe Rada
Advanced Installer Team
http://www.advancedinstaller.com