Abstract: A method of recording multiple segments of data on a high-density disc such as an optical disc when the recording of data is done on a non-continuous basis. The method comprises: recording first data in a first portion of the tracks on the disc; recording at least a first reference file associated with the first data in a second portion of the tracks adjacent to the first portion, with the second portion including a last recording track; recording a character which is repeated in a third portion of the tracks to signify the end of the first data and the associated reference file; and leaving a recording gap on the optical disc between the third portion and a fourth portion, which fourth portion will subsequently be used for recording second or additional data thereon. Coherent light is used to electro-optically record on the disc.