marks to mess up a CD mess it up too much?
Posted: Sat Apr 19, 2003 8:33 pm
instead of tossing away a used CD i decided to use it for error testing.
this is an audio CD with 1 track about 4 minutes.
you can see the "band" of burned area on the CD, about 1/4 inch wide.
i made a small mark with a sharpie-like marker across this "band", got 100% damaged in CD Speed ScanDisc. the CD could still be read with explorer, the tracked played fine in winamp.
made a bigger mark, about 1/3 inch wide (so it covers the whole width of the "band") and 3/4 inch long. also made it darker.
now the CD is not recognized by windows at all (doesn't recognize a CD in the drive), neither do InfoTool and CD Speed. some of the times the light of the CD drive doesn't even light up at all - the drive itself doesn't recognize the disc.
i was very surprised!
is this normal?
could the mark have "hidden" (damaged) the TOC part of the CD, or ATIP info, or whatever, so the CD can't be recognized at all by the drive & OS?
this is an audio CD with 1 track about 4 minutes.
you can see the "band" of burned area on the CD, about 1/4 inch wide.
i made a small mark with a sharpie-like marker across this "band", got 100% damaged in CD Speed ScanDisc. the CD could still be read with explorer, the tracked played fine in winamp.
made a bigger mark, about 1/3 inch wide (so it covers the whole width of the "band") and 3/4 inch long. also made it darker.
now the CD is not recognized by windows at all (doesn't recognize a CD in the drive), neither do InfoTool and CD Speed. some of the times the light of the CD drive doesn't even light up at all - the drive itself doesn't recognize the disc.
i was very surprised!
is this normal?
could the mark have "hidden" (damaged) the TOC part of the CD, or ATIP info, or whatever, so the CD can't be recognized at all by the drive & OS?