> >> 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). > > One reason for the DVD+RW incompatibility (according to Ricoh) is the fact > that they start at 24mm instead of 30 mm.
What is this "start at 30mm" thing??? As already mentioned DVD-ROM starts at 24mm and so as DVD+RW... And so as DVD-R! Quoting http://www.ecma.ch/ecma1/STAND/ECMA-279.HTM, DVD-R specification: The Lead-in Zone shall start at d7 = 45,2 mm max. and end at d8. ... The Data Zone shall start at + 0,0 mm d8 = 48,0 mm - 0,4 mm i.e. 24mm *even* at DVD-R!!! So what is this "starts at 30mm" thing??? There is 30mm "DVD[+RW] compatibility" thing but that's how much should be written *after* 24mm. I.e. the claim is that in order to assure compatibility with DVD-ROM the [temporary] lead-out should not be closer than 24+30mm=54mm from center as well as media in this range should be de-iced. > >> As the DVD+R drives are not yet available, > > >Yes, there are. > > YOu cannot get them for money now..... I definitely can (I have one coming) and it's even slightly less expensive than 1st generation drive. A. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
