Disk Utility 12.x: Record on a recordable CD more than once
Normally, you can burn items to a recordable CD, such as a CD-R or CD-RW disc, only once. However, if you use Disk Utility to burn the disc, you can burn items to the disc at several different times, as long as space is available. This is also called “multisession burning.”
To burn a disc, you need an optical drive in your computer or connected directly to your computer. You can’t burn a disc using a remote optical drive.
- Open Disk Utility, in the Utilities folder in Launchpad.
- Create a disk image that contains the files you want to burn to the disc.
The files must be from a partition with a Mac OS Extended disk format. To check a partition’s format, select the disk in Disk Utility, and look at the information at the bottom of the Disk Utility window.
- Select the disk image, and then choose Images > Burn.
- Select the “Leave disc appendable” checkbox. If you don’t see this option, click the triangle in the upper-right corner.
- Insert a blank recordable CD in the optical drive, and then click Burn.
To add more files to the disc later, follow the steps above. You can continue this process until all available space on the disc is used.