About Multisession Disc Recording

What is a multisession Disc?

A multisession disc is a writing method allowing recordable discs to be written to more than once (more than one recording session). For example, you can save files to a CD-R disc, and then later, save more files in a future session.

About sessions

A session is one recording on the disc. The first session records the initial files and file structure. Future recording sessions can be used to add or delete files.

Multisession discs can be read back by the recordable disc drive they were created in. These discs will probably be incompatible with any other CD or DVD drive until the last session is closed.

When the last recording session is closed, a lead-out is written on the disc makingit more compatible with other drives. After closing a session, the disc cannot be written too. Closing a session takes up about 13 MBs of disc space.