I don't know the details of the process, but here are some links that may
help.
http://users.forthnet.gr/ath/axatis/FAQs/CDR/Basics/packet.htm
http://www.plextor.com/english/support/faqs/G00017.htm

An explanation that is also on the last link:
Lead out - An area at the end of a session that indicates that the end of
the data has been reached. The first lead-out on a disc is 6750 sectors (1.5
minutes, about 13 megabytes) long; any subsequent lead-outs are 2250 sectors
(.5 minute, about 4 megabytes). Writing the lead-out closes the session.
CD-ROM drives and CD audio players cannot see the data/audio in a session
until the session is closed.

Peter
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-----Original Message-----
< The process is called "closing" or "finalizing". There is some additional
information that is written to the CD that also prevents any more addition
to it. If you wrote to the CD several times, you have a multi-session CD. >

Do these unclosed multisessions diminish the disk capacity, as was
previously described, or is it the closing/finalizing that results in
diminished space from adding a file to an already written-to disk?
Rob

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