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If you have trouble burning discs on Mac
If you have difficulty creating your own DVDs or CDs, try these suggestions.
Be sure your Mac has the correct equipment for recording information onto discs. Check the Disc Burning section of System Information to find out what kind of discs your Mac can burn.
If you are using an app to create a custom disc, check the app’s user guide for more information and instructions.
Check the available space on the disc to make sure all of your data will fit. To see the available space, select the disc, then choose File > Get Info. You may need to eliminate some items or change the size or quality of items to reduce file sizes.
Check the available space on your computer’s internal disk. Space on the internal disk is used during disc burning: 700MB to burn a CD, 4GB to burn a DVD, and 8GB to burn a dual-layer DVD. To check the available space, open Disk Utility, select the disk (usually named Macintosh HD), then click Info.
For more help, search for information about burning discs on the Apple Support website.