disc image can then be tested after it is assembled but before writing to a physical disc.

Sessions

DVD and Blu-ray (sequential) discs also allow the use of multiple sessions.

Tracks

Tracks contain the information to be stored on the disc. A track is a consecutive set of sectors on the disc containing a block of data. One session may contain one or more tracks of the same or different types. Tracks can be audio information or data, which use

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