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BLANK CD-RW MEDIA |
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CD-RW disk can be
rewritten a thousand times. CD-RW drives can also be used to
write CD-R discs, and they can read CD-ROMs. But, CD-RW disks
have a lower reflectivity than CD-ROMs and CD-Rs, and newer
MultiRead CD-ROM drives are required to read them. Unlike CD-Rs,
in which the entire disc or an entire track is recorded at once,
CD-RWs support UDF (Universal Disk Format), which is similar to
the file system on a hard disk. Using variable packet writing,
small numbers of files can be appended, and using fixed packet
writing, files can be added and deleted. The fixed packet
approach requires preformatting like a floppy disk, but takes
considerably longer. CD-RWs use phase change technology to alter
the reflectivity of the disk's surface.
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