I've burned a lot of files with big names on a DVD and most of them got truncated. I suppose it's because of the file system used on DVDs. But those names now end in weird capital-letter with numbers codes. What does that mean ? Is there a way to retrieve those names ?

P.S. All files are in root, no sub directories.

  • 1
    Can you please give us examples of some of the file names? – music2myear Nov 8 at 21:55
  • It seems my DVD burning app (Ashampoo) limits names to 123 characters. For instance the name Expert Python Programming 2nd Edition - Become an ace Python programmer by learning best coding practices and Advanced-level Concepts With Python 3.5 (148 characters) Becomes Expert Python Programming 2nd Edition - Become an ace Python programmer by learning best coding practices and adva-QGUMEUNK – Demis Nov 12 at 10:33
up vote 1 down vote accepted

Why are filenames shorter? The 'Joliet' filesystem for optical discs has an official 64 character (including spaces) length limit; the 'ISO9660' standard is even more restrictive, requiring a maximum of 8.3. Quoting from Wikipedia (op cit.):

The specification only allows filenames to be up to 64 Unicode characters in length. However, the documentation for mkisofs states filenames up to 103 characters in length do not appear to cause problems.4 Microsoft has documented it "can use up to 110 characters."

There's also a "Rock Ridge" standard with a cap of 255 characters (including spaces).

Your DVD burning app may be truncating file names and substituting other characters at the end of the character string.

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