Mac OS X automatically can burns CDs within the Finder and they support the cross-platform ISO 9660 standard, which can be read by both Macs and PCs. So you have a simple and cost-effective way to share numerous or extremely large documents. If your Mac has a SuperDrive, you can also burn and share files on a recordable DVD disc. A single DVD-R disc can hold up to 4.7GB of information (almost eight times the capacity of a CD), and a Windows PC with a DVD-ROM drive can read the DVD-R discs.