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NeroLINUX Glossary •
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7 Glossary
Buffer underrun
To burn a CD, there must be a continuous flow of data. If the data stream
between the computer and the recorder is so small that its internal buffer is
empty, the writing process is interrupted, as there is no data available to write to
the CD.
CD-Text
As well as audio data, there is space on the CD for a wide variety of additional
information, such as text describing the title and artist on each track. Currently
very few audio CD players have a CD text function. If an audio CD player does
not support CD text, it can play CDs with CD text in the same way as it does
"normal" audio CDs without CD text. This is possible because the additional CD
text information is stored before the start of the audio data in the lead-in area of
the CD.
You must have a CD recorder which supports CD text in order to be able to write
CD text to a CD. You can only write CD text in DAO recording mode (disc-at-
once). You can find out whether your recorder supports this feature in the
NeroLINUX 'Choose Recorder' dialog box.
CD-Extra
CD-Extra is a Blue Book standard recording format. It was previously called CD-
Plus and CD-Enhanced (Enhanced CD). This format has none of the
disadvantages of standard mixed mode CDs. On mixed mode CDs the first track
always contains an ISO file system, which means that audio CD players cannot
play the first track of this type of CD. In contrast, CD-Extra has two sessions.
The first session contains up to 98 audio tracks conforming to the Red Book
standard. The second session contains the ISO track with the ISO9660 file
system and the directories CDPLUS and PICTURES. This means that CDs in
CD-Extra format can be played on both CD drives and audio CD players, as the
second session cannot be "seen" by the audio CD player.
CD-i
The CD-i format (Compact Disc Interactive) was developed by Philips and Sony
and is described in the Green Book. This format is particularly suited to the
creation of interactive multimedia applications. These applications consist of sub-