Certain kinds of writeable CD and DVD discs can be erased and written to many times. If you have a CD-RW, DVD-RW, DVD+RW, or DVD-RAM disc and you use the Live File System file format, you can delete one or more files to make more room on the disc.
A CD or DVD disc onto which files can be copied. Common writeable disc types include CD-R, CD-RW, DVD-R, and DVD-RW.
Live File System
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Live File System
A file storage system that can be used to create CDs and DVDs. Discs formatted with Live File System allow you to copy files to the disc at any time, instead of copying (burning) them all at once.