disc-at-once

(redirected from Disk-at-once)
Also found in: Acronyms.

disc-at-once

To record all the data on a CD-R disc at one time. The lead-in (table of contents), all the tracks and lead-out are written, the session is finalized, and the disc is closed. The laser is kept on for the entire session, and the two-second gaps between tracks are eliminated. At one time, CD manufacturers asked for disc-at-once CD-R masters to ensure a proper reproduction, but this requirement has been mostly relaxed. See track-at-once.
References in periodicals archive ?
The factory-produced CD-Audio and CD-ROM titles will be using the time-honored ISO 9660 format because, for these, the Disk-At-Once creation and reproduction technology is the most cost-effective.
Another advantage is the ability to duplicate in either Track-at-Once or Disk-at-Once modes, the latter of which produces the equivalent of glass-master-ready CD-Rs.