From: john on
I cannot read a dvd on my Slackware 12 system. CDROMs work ok. Here is
what dmesg says, in part:

Probing IDE interface ide1...
hdc: SONY DVD RW DRU-830A, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
hda: max request size: 512KiB
hda: 488397168 sectors (250059 MB) w/8192KiB Cache, CHS=30401/255/63,
UDMA(66)
hda: cache flushes supported
hda: hda1 hda2 < hda5 hda6 > hda3 hda4
hdb: max request size: 128KiB
hdb: 160086528 sectors (81964 MB) w/7936KiB Cache, CHS=65535/16/63,
UDMA(66)
hdb: cache flushes supported
hdb: hdb1 hdb2 hdb3 hdb4
hdc: ATAPI 40X DVD-ROM DVD-R-RAM CD-R/RW drive, 2048kB Cache
Uniform CD-ROM driver Revision: 3.20
ide-floppy driver 0.99.newide


Device cdrom points to hdc. I can hard link /dev/hdc to /dev/dvd also.
I can actually burn an iso file on a dvd blank using cdrecord. I did
this with slackware-current downloaded as a single iso. But I can't
read it
or boot from it.

I don't have a device /dev/sr0.

I can't play a regular video dvd via gxine.

I am using dvd+ style media when I burn a data dvd such as the Slack
dvd.

When I try to mount a video dvd via
mount /dev/cdrom
I get
"no medium found".
When I try to mount one of my freshly burned copies of slackware-
current
I get
"Can't read superblock"

When I boot from same dvd the machine simply ignores the CD/DVD drive
with no message.

It is possible that the bios doesn't support DVD. How would I test
for that?

John Culleton

P. S. My cpu is AMD Athlon 780 Mhz.

Any hints?
From: Douglas Mayne on
On Thu, 24 Jan 2008 06:23:07 -0800, john(a)wexfordpress.com wrote:
<snip>
> I cannot read a dvd on my Slackware 12 system. CDROMs work ok.
<snip>
> I can actually burn an iso file on a dvd blank using cdrecord.
> Any hints?
>
Do have something against growisofs? AFAIK, that is the command to use
for DVDs, not cdrecord.

--
Douglas Mayne

From: Joerg Schilling on
In article <e85cb0b9-8cea-4cd3-8289-8f9936abeaca(a)q21g2000hsa.googlegroups.com>,
john(a)wexfordpress.com <john(a)wexfordpress.com> wrote:

>Device cdrom points to hdc. I can hard link /dev/hdc to /dev/dvd also.
>I can actually burn an iso file on a dvd blank using cdrecord. I did
>this with slackware-current downloaded as a single iso. But I can't
>read it
>or boot from it.

Are you sure you used cdrecord?

You did most likely use a broken fork instead of the useful original software.

get a recent original from:

ftp://ftp.berlios.de/pub/cdrecord/alpha/

compile and install cdrecord/readcd/cdda2wav suid root and things will work for
you.

--
EMail:joerg(a)schily.isdn.cs.tu-berlin.de (home) J�rg Schilling D-13353 Berlin
js(a)cs.tu-berlin.de (uni)
schilling(a)fokus.fraunhofer.de (work) Blog: http://schily.blogspot.com/
URL: http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily
From: Joerg Schilling on
In article <pan.2008.01.24.14.41.40.771538(a)sl12.localnet>,
Douglas Mayne <doug(a)sl12.localnet> wrote:

>Do have something against growisofs? AFAIK, that is the command to use
>for DVDs, not cdrecord.

cdrecord supports to write DVDs since February 1998.
growisofs first appeared 2001/2002 and does not support to write CDs.

Why use a different program for CDs and DVDs?

You just need to take care not to use software that has been
broken by Linux distributors ;-)

--
EMail:joerg(a)schily.isdn.cs.tu-berlin.de (home) J�rg Schilling D-13353 Berlin
js(a)cs.tu-berlin.de (uni)
schilling(a)fokus.fraunhofer.de (work) Blog: http://schily.blogspot.com/
URL: http://cdrecord.berlios.de/old/private/ ftp://ftp.berlios.de/pub/schily
From: Petri Kaukasoina on
Joerg Schilling <js(a)cs.tu-berlin.de> wrote:
>Are you sure you used cdrecord?
>
>You did most likely use a broken fork instead of the useful original software.
>
>get a recent original from:
>
>ftp://ftp.berlios.de/pub/cdrecord/alpha/
>
>compile and install cdrecord/readcd/cdda2wav suid root and things will work for
>you.

Slackware 12.0 delivers the original unpatched cdrtools version 2.01.01a23.
(In slackware-current it's now version 2.01.01a36).

But it's not installed suid root.