caffeinated wrote:I remember a guy online claiming that when some CDs are not functional when run in the burner they were created in. Does anyone know if there is any substance to this claim?
I suspect this may refer to some copy protection schemes that attempt to read the ATIP code from the disc in the drive to determine whether or not the disc is an original or a CD-R copy. All CD-R blanks contain an ATIP code that identifies the CD-R. When the protected program on the copy-protected disc begins to execute, it checks for an ATIP code, and if it finds one that identifies the disc as being a CD-R, the program concludes that it is being executed from a copy and refuses to run.
How does this relate to data being readable in a CD-ROM or DVD-ROM but not in a CD-RW? CD-RW drives read ATIP codes because they need to be able to read them to identify blank CD-R media. CD-ROM and DVD-ROM drives don't typically read ATIP codes since they have no need to. Thus, a disc burned burned and played in a CD-RW will fail since the CD-RW drive will read the ATIP code and allow the copy-protection scheme to identify the disc as a CD-R, while the same disc will work in a CD-ROM or DVD-ROM since those drives won't read the ATIP code and the disc will appear to be an orignal.
cfitz