Overview of Copying a Disc
Toast helps you make an exact copy of an existing single-session disc. If you try to copy a multisession disc, this procedure copies only the first session. (A single-session disc is a disc that has been recorded to once and then "closed" so that it cannot be recorded to again.)
You can copy a disc even with only one recorder. For more information, see Copying a Disc with Only One Recorder or Copying a Disc with Two Drives.
What Kind of Discs Can You Copy?
Audio CD or MP3 disc
iDVDTM or Toast video disc
Backup data disc
Any single-session Macintosh disc
Any single-session Windows disc
A simple cross-platform disc (readable by Macintosh and Windows, where Mac users can see Windows data and vice versa)

See Also:

Copying a Disc with Only One Recorder
Copying a Disc with Two Drives
Copying an Image File to Disc