What are “Disc at Once,” “Track at Once” and “Multisession” writing modes?
Disc at Once is a writing mode that requires data on a CD to be continuously written, without any interruptions. All of the information is transferred from hard disk to the CD in a single pass, with the lead-in, program, and lead-out areas being written in a single event. Track at Once is a writing mode that allows a session to be written as a number of discrete events called tracks. With the help of special software, the disc can be read before the final session is “fixated” (a process whereby the disc’s overall lead-in, program data and lead-out areas are written), allowing all of the data contained on the disc to be read by and CD or CD-ROM drive. A Multisession disc differs from Track at Once in that several sessions can be recorded separately onto a single disc (with each session containing its own lead-in, program data, and lead-out areas). In this way, data can be recorded onto the free space of a previously recorded CD. A CD-R that supports multisession can record a number of d
