Re: Unable to burn at 4x using cdrecord and dvd+rw-tools
> >I have a small problem with my dvd recorder. It's a NEC ND-1300A (dual
> >format). It writes DVD+/-R at 4x, DVD-RW at 2x and DVD+RW at 2.4x.
> >cdrecord (either from cdrtools or ProDVD) reports that the drive can
> >write at most at 2x:
>
> >Cdrecord-ProDVD-Clone 2.01a26 (i686-pc-linux-gnu) Copyright (C) 1995-2004 Jörg Schilling
> >Vendor_info : '_NEC '
> >Identifikation : 'DVD_RW ND-1300A '
> >Revision : '1.0A'
>
> >Drive capabilities, per MMC-3 page 2A:
> ....
> > Number of supported write speeds: 3
> > Write speed # 0: 2822 kB/s CLV/PCAV (CD 16x, DVD 2x)
> > Write speed # 1: 1411 kB/s CLV/PCAV (CD 8x, DVD 1x)
> > Write speed # 2: 706 kB/s CLV/PCAV (CD 4x, DVD 0x)
>
> >It refuse to work at 4x (with 4x media of course) even using -force.
>
> You need to use media that is certified for 4x by NEC.
*Write* speeds reported through page 2A by NEC units [and their
derivatives] are those applicable to CD-R[W] and are essentially bogus
in DVD context. In other words one can't use the above values to judge
if unit in question has erroneously recognized 4x media as 2x. The
effective speed values for currently mounted DVD media are returned by
NEC units through GET PERFORMANCE command, and not through page 2A. This
is not violation of MMC specification, because page 2A was declared as
"no longer recommended for use in multi-media devices." A.
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