Brent asked,
| Is there a way to turn data CD's into music CD's, so a deck will record
| them?
No, but with some decks one can simulate the effect. I'll get back to that.
| Or are the disks physically different?
No; the difference is a read-only indicator prewritten on the disc that tells
whether it is authorized for recording in standalones.
| I assume if I do an erase of these on my computer burner, I'd be turning
| them in to a data CD,
You wouldn't, as I can swear from personal experience. The indicator is not
affected, and it remains a music disc.
| as rewritables would erase the scms that the deck needs.
SCMS is not a property of the disc. It's a property of the storage format.
Use a CDR or a CDRW, even if it's authorized for audio, for data files in-
stead of audio tracks, and there won't be any SCMS bits on it. Burn audio
tracks onto a data blank with a computer's CDRW drive, and it will have SCMS
bits.
A major differnce is that if you burn a track on a computer the SCMS bits
will be set the way the burning software dictates (or allows you to select),
while if you record a track on a deck the SCMS bits will be set according to
the rules of SCMS and possibly those rules will prevent writing the track at
all. But either way, if the track is written, SCMS bits are written for it;
and when a track on a CDRW is deleted, its SCMS bits are deleted as well.
Back to Brent's first sentence:
| Is there a way to turn data CD's into music CD's, so a deck will record
| them?
There is no way to alter the indicator, but some decks can be fooled by the
"swap trick." It involves loading a music CDR, letting the recorder read in
its characteristics, and somehow -- the exact procedure varies from model to
model -- exchanging it with a data CDR in a way that prevents the recorder
from rechecking the authorization marker but keeps it content to rely on the
information that it read from the first disc. Because the discs really are
not physically different, the deck will treat the data blank as if it were
the music blank that you had inserted first.
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