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[Dvdrtools-users] DVD recording
From: |
Konstantin Koll |
Subject: |
[Dvdrtools-users] DVD recording |
Date: |
Mon, 17 Jul 2006 14:32:03 +0200 |
Dear members,
I've just subscribed to the dvdrtools-users list because I have a
problem with DVD recording. I write my own operating system which
already includes a burning software (see
http://www.deskwork.de/FOTOS/BRENNEN.HTM for screenshot; it's in
German). It can record CD-Rs and CD-R/Ws in TAO mode and works just fine.
Now, I'm up to extending it to DVD recording, but can't get it to
work. What it can do now:
- Determine the DVD type inserted (-R, -R/W, +R, +R/W, -RAM and their
properties)
- Blank a DVD-R/W
- DVD-RAM can be mounted like a harddisk and works just fine
What I'd like to have:
- Record pure ISO data DVD-Rs and DVD-R/Ws
- If the DVD-R code can be easily made working with DVD+R, I'll do
it, otherwise ignore DVD+R
- Ignore DVD+R/W since they need formatting like a DVD-RAM, but have
no random access and are much less reliable
Since a CD-R/W is just the same as a CD-R (except for blanking), I
use a DVD-R/W for testing to save money on destroyed DVD-Rs. I use
the following command sequence on my LG GSA-4167B:
- Set speed
- Set write parameters (use write mode 2, which is DAO with DVDs)
- Reserve track (i.e. 50000 sectos or whatever the ISO file size is)
- Get next writeable address (I get LBA 0 all the time which looks ok)
Now, sending data for LBA 0 fails. A sanity "close track/session"
command takes some time to "finish" the DVD-R/W, and after that it
has the space occupied, but without any data. The -R/W is closed and
can be blanked.
Where's my mistake? I've read in the list archive that a DVD-R/W can
only "simulate" continous recording - what does that mean? Thanks for
helping me out, all answers are appreciated!
Yours,
Konstantin Koll
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