DVD/BR writers won't recognize certain DVDs

[MR ZenWiz]

On Thu, Mar 24, 2016 at 8:08 AM, Karl Auer <kauer at biplane.com.au> wrote:
> On Thu, 2016-03-24 at 14:11 +0000, Jonesy wrote:
>> On Thu, 24 Mar 2016 00:27:53 -0700, MR ZenWiz wrote:
>> >
>> > The drive does make reading noises several times, and the light
>> > flashes for a while, but once it stops, nothing shows - not in df,
>> > not
>> > in the usual drive mount balloons that pop up, nada, zip, zilch.
>>
>> Nichts in syslog , oder `dmesg`?
>
> (that means "nothing in syslog, or 'dmesg'?)
>
> Are the DVDs that don't work commercial ones? If so, is there any
> correlation between the region code of the disk and whether or not they
> read OK? Just wondering whether you might need libdvdcss, though the
> symptoms aren't quite right.
>
I suppose it's possible the discs aren't region 1, but they are
commercially mass produced for use in the US, so I doubt that.

I got one of them to mount at work, and it was read into a file that
can't be watched - the menu terminates on any click.  I'll have to try
mplayer track by track, although it only claims to have 1.

The other one also loaded, but it got a read error in the first 2048
sectors and quit.