Appendix

Session-at-Once (SAO)

This mode is used when writing each session in a single pass without pausing. More sessions can be added later if there is enough space left on the disc.

Example: CD Extra

Audio

Audio

Audio

Data

Track 1

Track 2

Track 3

Track 4

 

(Session 1)

 

(Session 2)

nWith CD Extra, the audio is written in the first session and the data is written in the second. A maximum of 99 tracks can be written.

Packet Writing

This mode is used when writing to a track of a disc using small blocks of data called “packets,” in a manner similar to a floppy disk. This mode is useful when making small incremental backups of data. You will need to use software which specifically supports packet writing, such as Adaptec’s DirectCD.

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Packet

Same as writing to floppy or hard disk

nDiscs must be formatted before they can be used for packet writing. With CD-RW, erased data can be overwritten until the disc is completely full.

With CD-R, the space used by the erased data cannot be reused and is “masked” so that it is no longer visible. This can be done up to 100 times.

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