> There are a lot of differences. DVD-ROM, DVD-R & DVD-RW are a faminly that
> behaves similar. Similar low level format, 300 inner diameter...
^^^???? DVD-ROM
specification says that LBA 0 is expected to be found at 24mm! Similar
low level format? DVD+RW is more similar to DVD-ROM than DVD-R[W].
[Current] DVD+RW format differs with just few bits [which most players
ignore anyway], while DVD-R[W] has distinct "Linking data" structure
which is essential for playback. Meaning that DVD player *has to* have
*explicit* support for DVD-R[W] while it (explicit support) is *not*
required for DVD+R[W] playback, players should just play it.
Unfortunately not all do, but still DVD+R[W] compatibility is *mainly* a
matter of media reflectivity and drive calibration and *not* low level
format (I mean among those DVD-ROM players that fail to play DVD+R only
a small portion is actually confused by those different bits).
> DVD+R and DVD+RW ... inner diameter is 24 mm,
^^ Just as DVD-ROM!
> As the DVD+R drives are not yet available,
Yes, there are.
A.
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