Cache file data
If this option is enabled, the CD/DVD/Blu-Ray image will be created in a temporary directory first, and then the image will be written to the disc from the temporary file. If you are writing from a network location, including many smaller files (under 1K), or using a slower system, this setting is recommended to help avoid buffer underrun errors.
Note: Using this feature can result in usage of up to 800MB of temporary hard drive space.