> The media info tool gets its information from the MODE SENSE command and > checks for the sanity of the write speed values. > If one of these values is below 1x DVD (=1385kb/s) the values are > considered CD-R(W) values and will not be displayed.
Correct. > This check is not included in growisofs. Almost correct. This check is *included* in growisofs, but it's *performed* in DVD+ context only. > So there are two solutions available: > Check for sanity of the speed values of the MODE SENSE commands and > ignore them if they seem to be CD values. > Fix firmware and report DVD speed values in MODE SENSE command (this has > to be done by NEC -> I already contacted their support but do not have > an answer yet). There is 3rd solution (which will be implemented in next update). Pull even current write speed with GET PERFORMANCE and disregard MODE SENSE values. Formally speaking MODE SENSE#2A is not guaranteed (well, it's rather "specification leaves room for ambiguous interpretation" thing than "not guaranteed" thing) to return DVD descriptors(*). It was *empirically* found that most units seem to return sane descriptors and this behaviour was simply assumed. The latter [assumption] has just been proved wrong. Unfortunately pulling current write speed with GET PERFORMANCE does not work with all units (most notably it doesn't with Pioneer), so there will be a mix of MODE SENSE and GET PERFORMANCE... (*) meaning that you probably shouldn't hold your breath for firmware update from NEC:-) Cheers. A. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
