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Adding Files to Closed CD-R


AlanHo
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I have a CD-R disc on which I burned a number of utilities to carry with me when I am asked to help friends with computer problems. After creating the disc I closed - or finished it - whatever the correct terminology is - using Nero to allow me to use it on other computers.

Today I went to burn a copy of a programme onto a CD-R - got "muxed ip" - and put my Utilities disc into the burner by mistake rather than a blank disc.

It added the new file to the disc using the Vista burning software no problem - without over writing any existing stuff.

I am now a little confused - the CD-R had been previously closed and I am under the impression that you could then not add further files later.

Can someone clarify this conundrum - if indeed it is one............... :unsure:

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Basically...

Closed Session - The current recording session is closed, allowing more files to be written at a later date. ONLY compatible with newer hardware.

Closed Disc - The entire disc is finalized, thus making it readable by any device. No new files can be added.

An exception is Audio CD's which once a session is closed, adding a new session will make the previous session unreadable.

For a long winded explanation go here - http://www.cdrfaq.org/faq02.html#S2-5

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