Yamaha CRW2100SX User Manual
Appendix
Writing Modes
Disc-at-Once (DAO)
This mode is used when writing a complete disc in a single pass without pausing.
Data cannot be added later, even if the full capacity of the blank disc has not been
used.
Data cannot be added later, even if the full capacity of the blank disc has not been
used.
Data
Example: General CD-ROM
Session 1
Track 1
Any remaining space
cannot be used
0
Lead-in
Lead-out
Audio
Audio
Audio
Audio
Audio
Audio
Audio
Session 1
Example: Audio CD
0
Lead-in
Track 1 Track 2
Track 3
Track 4
Track 5
Track 6
Track 7
Any remaining space
cannot be used
Lead-out
n The lead-in and lead-out areas signify the beginning and end points of a session. They
are not part of the data but contain information about the session itself. Basically, a
session consists of a lead-in, data, and a lead-out.
session consists of a lead-in, data, and a lead-out.
Track-at-Once (TAO)
This mode is used when writing data to a disc one track at a time. More tracks
can be added later if there is enough space left on the disc. This is why Track-at-
Once mode is sometimes referred to as Multisession.
can be added later if there is enough space left on the disc. This is why Track-at-
Once mode is sometimes referred to as Multisession.
0
Data
Track 1
Data
Track 2
Data
Track 3
Session 1
Session 2
Session 3
Any remaining space
can be used
Lead-in
Lead-out
/Lead-in
Lead-out
/Lead-in
Lead-out
n Only the first session of a multisession disc can be played back on a conventional audio
CD player. Single session discs can be played back completely.
29