Hi The ISOCD9660 standard limits the maximum size of any individual file to 2GB. You can split the file into smaller chunks (which you can reassemble) if you wish to write an ISO compatible disc.
However, if you wish to eliminate the restriction entirely, you must write the DVD as an UDF filesystem (ISO/UDF bridge). FreeBSD can quite happily mount UDF discs (though some older DVD-ROM drives might struggle to read them correctly). As regards userspace tools, there is plenty of high quality burning software for FreeBSD that allows you to create UDF discs (i.e. K3b). A "mkudffs" tool could be handy though. Aren.
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