There are several ways to write data to a CD-R or CD-RW disc. Not all CD writers support all of these methods, but any method that a drive does support can be used to write to either a CD-R or CD-RW disc in that drive:
(DAO) recording writes
the entire CD in one pass. The entire write must be completed without
interruption. Once the write completes, no further data can be
written to that disc. DAO recording can be used to write a single
track (typical when creating a data disc) or multiple tracks (typical
when creating an audio disc).
allows writing in multiple passes, as many as 99 tracks on a disc.
Each track must be at least 300 blocks long, which translates to 600
KB for a typical data CD. TAO recording consumes 150 blocks in
overhead for run-in, run-out, pregap, and linking. Also, because the
laser must be stopped and restarted for each track, there is at least
run-out block following each track and
run-in block preceding each new track.
If the drive and burning software handle TAO recording properly,
there will ordinarily be only one pair of run-out/run-in blocks
between tracks. These blocks will be empty and therefore silent and
Some combinations of drives and software handle TAO imperfectly, placing garbage data in the run-out/run-in interstices, which results in audible pops on audio CDs. Also, some drive/software combinations ...