Hello...

I realise that this is a very old subject but I been trying to find answers or at least some fundamental understanding of this file system, as I am somewhat confused.  I have to use UDF 1.5 for an application which writes out .wav files to a DVD-R media from a MS 2003 server.

From what I understand UDF 1.5 when writing to a write-once media does the following:

• UDF allows for 1 file to be the max size of the media to be used, in this case 4.3Gb
  
• There is minimal waste of disc space due to the packet allocation
  
• Initially allocates space for the TOC, in this case a finalised DVD has only 1 track and 1 session
  
• The Virtual FAT is updated on the host and is then updated to the TOC on actually writing out the data

What I seem unable to find is the Maximun limit of files names that can be stored in the TOC (FAT), is there a limit as there is under MS DOS FAT/FAT32/NTFS, is there a limit?

I have been able to write DVDs which contain 60-80,000 files but get errors when trying to write 100,000 files .. so suspect that there must be some limit.

Thanks in advance.

This table might help you out.

(in reply to ncsa)