Re: problem burning DVD-R with PX708A
> > > growisofs can't burn dvd-r. It works fine with dvd+rw.
> > > I haven't tried yet with +R nor -RW.
> > > I've made several atempts, always failing the same way:
> > > -speed does not work
> > > burning fails trying to write block 0.
> > >
> > > INQUIRY: [PLEXTOR ][DVDR PX-708A ][1.04]
> > > Mounted Media: 11h, DVD-R Sequential
> > > Media ID: MXL RG01
> > MXL means Maxell, right? Note that Maxell DVD-R brand was exposed to
> > counterfeit attempt, see
> > http://www.maxell.co.jp/e/release/20030704.html. How does your emballage
> > look like?
> It's an unbranded 50 spindle.
This is pretty much the definition of counterfeit media according to
Maxell. They do state that it doesn't match the original quality and the
fact that forgery was detected only confirms it (somebody most likely
tried to return counterfeit media to Maxell after it didn't work).
> However, I tried with an
> other brand (Sky which identifies as 'VDSPMSAB 01') and had the same problem.
> However those DVD were given for 4X and I successfully burnt 2 out of 5.
Varying results are definitely indication of poor firmware support. It's
unfortunate that two brands in a row didn't work, but you've got to keep
looking. Do try brand explicitly recommended by Plextor.
> > > # growisofs -dvd-compat -speed=1 -Z /dev/scd1=Input.iso
> > >
> > > :-( Failed to change write speed: 5540->1385
> I dug a bit further into the speed problem. It seems the unit always returns
> the highest performance for the type of media regardless of the speed
> requested. I mean the command GET_PERFORMANCE (0xAC) with param "Overall
> Write performance" (4) would always return 5540 for DVD-R's.
Note that it does report correct speed for DVD+ media (see your own
first post:-), so I would still like to see dvd+rw-mediainfo output for
*supported* DVD-R media before drawing conclusions. *Anyone* who has
PX708 can submit such output here!
> However the command 0xAD returns the correct current write speed
^^^^ ^^^^^^^ Where? It must be a typo and you most
likely meant some other command...
> as set by the 0xB6
> command. I'm going to change a piece of code, just to see how far it goes
> without testing back the speed.
Note that if it actually obeys 0xB6, then you should be able to run
growisofs -speed=1 and have it failed, and then *without reloading
media* run growisofs *without* -speed option to perform recording at 1x
without changing a line of code. Can you confirm this?
> Do you have any pointer on a kind of command reference for the DVD devices ?
There is a link at dvd+rw-tools page, look for "MMC." A.