Compressing a Mac OS Only Data Disc
If you are planning to record a Mac Only data disc, you can compress the contents of the disc during recording. Depending on the type of files you are recording to disc, Toast can fit up to fifty percent more data on the disc.
To compress a Mac Only data disc:
1In the Data tab, click the Disc Settings button (or the disc title).
The Disc Settings drawer opens.
2 In the Disc Settings drawer, select the Compressed check box.
You are now ready to continue adding files to your data disc. Once you record your project to disc, it will be compressed. (Toast does not have to be installed on the machine in order to compress the disc.)
To use a compressed disc after compression:
1Insert the disc into a drive.
2 When the disc icon appears on the desktop, double-click it.
The disc opens into a folder, which contains the compressed file containing the contents of the disc.
3 Double-click the compressed file.
The file will de-compress and you will be able to view the contents.

See Also:

Choosing Which Mac OS Can Read Your Disc
Encrypting a Mac Only Data Disc
Scheduling Automatic Backups
Copying a Data Disc