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I made multiple copies of a data disk using the following commands:

genisoimage -r -f -o dvd.iso folder/
wodim -eject dvd.iso
wodim -eject dvd.iso
# ...
wodim -eject dvd.iso

As far as I can tell, these DVDs contain the ISO9660 filesystem with Rock Ridge extensions, and not UDF. man genisoimage says:

-udf Include UDF filesystem support in the generated filesystem image. UDF support is currently in alpha status and for this reason, it is not possible to create UDF-only images.

These DVDs work fine in Linux machines, but in Windows, only the 8.3 filenames show up, since they are missing the Joliet filesystem extension. Is it possible to add the Joliet data after burning the disks, so that the filenames will show up properly on Windows?

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If you burned them to write once media and not rewriteable media it's unlikely. Depending on the burn settings in rare cases there might be an option. Without really looking into it's likely that Joilet is a compatible format that uses previously unused gaps or extends certain parts of the base format. You can't overwrite those on write once media.

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  • I was hoping that it was possible to write something after the existing data. I'll accept your answer until someone else comes up with a solution.
    – rudolfbyker
    Jun 8, 2018 at 14:43
  • The wiki for wodim mentions that it does support multi session burning. I'm not sure whenever you can do that retroactively. Also it might be important whenever the disc was burned session at once or disc at once.
    – Seth
    Jun 8, 2018 at 16:14
  • It was burned with the exact commands shown in my question. The default is -tao (Track-At-Once).
    – rudolfbyker
    Jun 9, 2018 at 11:25

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