What is 'packet' writing?
This method allows you to write data to a CD in small increments instead of large blocks as with disk-at-once and track-at-once. It eliminates the session closing overheads inherent in the multisession method of adding data to a disk in more than one write. However, you cannot write CD-DA (aka Red Book) audio disks using packet writing. With packet writing, you can use your CD-R just like a hard drive. With packet writing, there is no need to open or close a session each time data is written, which means even the CD-R novice should be able to copy data to CD with relative ease.
Used with permission from Octave Systems: www.cd-r.com