sorry ak47,


i am loose in the words on your last post.
give me time to translate and understand you!

m not sure for DVD-R because I don't have a DVD*Burner, but that works like this for CD-R : the virgin CD-R has on it informations including : name of the producer, type of surface (alometal, pthanocyanine...), capacity (650 or 700 Mb, never more, even for CD90 or CD99 that are seen by the burner as CD80).

@ Phil,
really clear about " informations including", that's the way it goes.


@ ak47,
sorry, i call a friend in portuguese forum to translate your last
post for me and he is (more or less) lost and confused too.
he understand this language very well and have
great posts, tutorials, explanations in english too.
is not your fault ak47, it's mine !

but like Avalon posted (thanks again Avalon)
"In Nero You can only setup DVD if You have a DVD-Burner inside..."
my friend have a cdburner and dvd burner.
he have nero in his system(win XP) and in nero
he can choose a dvd burner or cdr-w burner,
but only in the dvd burner the dvd media can be read

in my system i have the same version of nero but
can't choose a dvd burner,the reason is the
same technical reason that Avalon posted.
then IF my cdrburner could read a dvd it only will show 700mb but
nero,or better,the system can't see the virgin dvd
in any place cos he don't "feel" a dvdburner.
the cdr-wburner can't read the informations inside the dvd media
for technical reasons.....means, impossible!
the cdr-w burner can't read the informations inside the dvd media!
and the idea was/is: dvd-r on a cd-rw drive
(like the title of this thread)

i don't have a dvd burner cos i did this "formula" :
cdr80 or 90 minutes + kvcds = who need dvds burners?

after hard search and long wait for "new ideas"
...
i can post the reason (final point) ...

why a cdr burner can't burn a dvd media


some reasons:
difference is the actual beam its self in frequency !
Cdrom Laser Wavelength 780 nm , infrared !
DVDrom Laser Wavelength 650 and 635 nm , red !

summary:
its impossible to read a DVD ROM without a DVD capable laser

The opposite is possible but for better accuracy many (all?) standalone players have two lens : one for DVD, one for burned CD.