Apple DVD Studio Pro 4 - Manual (Page 579)

ISO 9660 Volume
All DVDs also have an ISO 9660 volume. This volume only supports filenames with
single-byte ASCII characters. The ISO 9660 volume must conform to the “26.3” specification,
similar to the “8.3” specification mentioned earlier (26 characters maximum followed by
a 3-character extension; the only allowed characters are uppercase letters, numbers, and
the underscore). In addition, folders cannot have extensions in their names. Filenames
are automatically truncated and invalid characters replaced with an underscore. Filenames
using double-byte characters exclusively are renamed as FILE_1, FILE_2, and so on.
Joliet Volume
Once you have selected the DVD-ROM Content checkbox, the Joliet Extension Support
checkbox becomes active.
Important: The Joliet Extension Support checkbox is only applicable when writing to red
laser media. It has no effect when writing to blue laser media.
Selecting the Joliet Extension Support checkbox forces the creation of the Joliet volume.
This volume supports long Unicode filenames, just like the UDF volume, but has a limit
of 110 characters. Folders with extensions are also supported. Filenames longer than 110
characters are automatically truncated. When not selected, the Joliet volume is not created.
Note: In rare cases, enabling the Joliet Extension Support checkbox and adding a number
of files with extended character set names to the disc may create playback problems on
some older DVD players. Select it only if you need to include such files and can test the
disc on your intended players.
Filenaming Issues with Blue Laser Media
Blue laser media contains only one volume—a UDF 2.5 volume. For the purposes of
filenaming, a UDF 2.5 volume has the same rules as the UDF 1.02 volume found on red
laser DVDs. See
UDF 1.02 Volume for more information.
Important: Older computer operating systems, including Mac OS X v10.3 Panther and
earlier, and DVD players do not support UDF 2.5 volumes whether on red or blue laser
discs.
Creating ROM-Only DVD Discs
You can use DVD Studio Pro to create DVD discs that contain only ROM data. The
advantage of using DVD Studio Pro to do this (as opposed to using the Finder) is that,
depending on whether you are using red laser or blue laser media, the volumes that are
created are compatible with the DVD specification.
To create a ROM-only DVD disc
1 Do one of the following:
• Select the project’s name (next to the disc icon) in the Outline tab.
579 Chapter 22 Finishing a Project