Is a serial number placed on the disc by the recorder?
In general, no, but it appears that some of the newer consumer audio CD recorders write one. The Recorder Unique Identifier (RID) is a 97-bit code recorded every 100 sectors. It is composed of a brand name identifier, a type number, and a drive serial number. Recorders such as the Philips CDR870 write the RID to discourage distribution of copyrighted material. Windows will show something like “Volume Serial Number is 4365-0FED”. There does not appear to be any way to control this. Some have suggested that the serial number is generated based on data found on the disc, similar to the way that audio CDs can (mostly) be uniquely identified by the number and durations of the tracks. On floppy disks and hard drives, the “serial number” is generated based on the date and time when the disk is formatted.
(2000/10/29) In general, no, but it appears that some of the newer consumer audio CD recorders write one. The Recorder Unique Identifier (RID) is a 97-bit code recorded every 100 sectors. It is composed of a brand name identifier, a type number, and a drive serial number. Recorders such as the Philips CDR870 write the RID to discourage distribution of copyrighted material. Windows will show something like “Volume Serial Number is 4365-0FED”. There does not appear to be any way to control this. Some have suggested that the serial number is generated based on data found on the disc, similar to the way that audio CDs can (mostly) be uniquely identified by the number and durations of the tracks.
(2004/07/15) In general, no, but it appears that some stand-alone consumer audio CD recorders write one. The Recorder Unique Identifier (RID) is a 97-bit code recorded every 100 sectors. It is composed of a brand name identifier, a type number, and a drive serial number. Recorders such as the Philips CDR870 write the RID to discourage distribution of copyrighted material. Windows will show something like “Volume Serial Number is 4365-0FED”. There does not appear to be any way to control this. Some have suggested that the serial number is generated based on data found on the disc, similar to the way that audio CDs can (mostly) be uniquely identified by the number and durations of the tracks. On floppy disks and hard drives, the “serial number” is generated based on the date and time when the disk is formatted. The four bytes are: 1. month + seconds 2. day + hundredths of a second 3. high byte of the year + hours 4. low byte of the year + minutes (From http://www.zdnet.com/pcmag/pctech/c
In general, no, but it appears that some of the newer consumer audio CD recorders write one. The Recorder Unique Identifier (RID) is a 97-bit code recorded every 100 sectors. It is composed of a brand name identifier, a type number, and a drive serial number. Recorders such as the Philips CDR870 write the RID to discourage distribution of copyrighted material. Windows will show something like “Volume Serial Number is 4365-0FED”. There does not appear to be any way to control this. Some have suggested that the serial number is generated based on data found on the disc, similar to the way that audio CDs can (mostly) be uniquely identified by the number and durations of the tracks. On floppy disks and hard drives, the “serial number” is generated based on the date and time when the disk is formatted. The four bytes are: • month + seconds • day + hundredths of a second • high byte of the year + hours • low byte of the year + minutes (From http://www.zdnet.com/pcmag/pctech/content/solutions
(1999/04/11) SCMS is the Serial Copy Management System. The goal is to allow consumers to make a copy of an original, but not a copy of a copy. Analog recording media, such as audio cassettes and VHS video tape, degrades rather quickly with each successive copy. Digital media doesn’t suffer from the same degree of generation loss, so the recording industry added a feature that has the same net effect. SCMS will affect you if you use consumer-grade audio equipment. Professional-grade equipment and recorders that connect to your computer aren’t restricted. See section (5-12) for more about the differences between these types of devices. The system works by encoding whether or not the material is protected, and whether or not the disc is an original. The encoding is done with a single bit that is either on, off, or alternating on/off every five frames. The value is handled as follows: – Unprotected material: copy allowed. The data written is also marked unprotected. – Protected material,
