> > ... it is strange that the dvd+rw-tools doesn't allow > > you to burn. > > Are we still talking about ":-[ attempt -blank=full ]" or is it > something else? Version 5.6 and later should have engaged DAO > automatically in such situation and manage to burn. But if it didn't > [not even after media re-load], then it must be a firmware bug. There is > a way to tell. Marc! Run 'dvd+rw-mediainfo /dev/dvdrw verbose' with > media growisofs complains about and submit output [I probably should > recommend to send to me personally so that public won't get bored by > rows of hexadecimal numbers].
Yes, apparently some [SONY] firmwares make it impossible to tell minimally and fully blanked media apart, which is why growisofs failed to auto-engage DAO. There were couple of question Marc posed, which I figured worth bringing up to the public. --------------------------------------------------------------- > > It still says to do a full blank, but why is this needed? > > Because DAO is the only recording strategy applicable to minimally > blanked disc. And growisofs failed to recornize that the disc in > question as such and attempted to apply Incremental Sequential strategy > as it was fully blanked/virgin media. --------------------------------------------------------------- > > BTW: Does growisofs support bufferunderrun protection? > > Buffer underrun protection is *always* engaged(*) by growisofs > *unconditionally*. In case you wonder why it's left off by default by > cdrecord. Well, in CD-R[W] case buffer underruns can actually limit > playability of media, because buffer underruns are denoted by *gaps* in > CD tracks. In DVD it's never the case. Block positions are *pre-defined* > by some means [in DVD+ case - by ADIP, in DVD- case - by land pre-pits], > thus providing for adequate accuracy when restoring from buffer > underruns. > > But you should be aware of one thing. *Some* units *may* not support > buffer underrun protection in DAO mode and DAO mode only. That's because > buffer underrun protection is not defined in DAO context by [at least > some] specifications. And this is actually confirmed by my initial > exprience with a SONY dual-format unit. They might have changed that > with a firmware update, but this experience is actually the reason why > growisofs did not initially support DAO and why I personally [still] > don't recommend it. I recommend Restricted Overwrite for DVD-RW. > > (*) well, in DVD+ case it actually can't be switched off. --------------------------------------------------------------- > > ... doing a full blank each time can't be healthy for the disc. :/ > > Keep in mind that the moment those sectors which are overwritten by > minimal blank are worn out, the whole disc becomes unaccessible > *regardless* condition of the rest of media. So that full or minimal > blank hardly makes any difference from "media health" viewpoint. Full > blank is just dead boring and time wasting, which is the real reason why > nobody wants to perform it. --------------------------------------------------------------- Marc by the way is the first one to report that his settop DVD-Video plays fails to play DVD-RW media recorded in Restricted Overwrite, but not in DAO. Well, it still might turn out to be something similar to DVD+RW lead-out issue described in Compatibility "chapter" on my page. This remains to be seen... A. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
