Re: Problems mounting DVD-RWs written with growisofs

["Thomas Schmitt" <scdbackup@gmx.net>]

Hi,

Joerg Schilling wrote:
> In contrary to cdrecord, growisofs does not implement "multi-border"
> support but uses some dirty tricks to pretend multi-session.

With growisofs this depends on the formatting state
of the media. Profile 0013h "DVD-RW restricted overwrite"
or profile 0014h "DVD-RW sequential recording".

The "dirty trick" is applied to 0013h and is a good
reason to applaud Andy Polykov. One can carry it even
one step further to obtain an emulated Table Of Content
on overwriteable media and in disk filesystem objects:

TOC layout   : Idx ,  sbsector ,       Size , Volume Id
ISO session  :   1 ,        32 ,    742034s , HOME_2008_11_05_213825
ISO session  :   2 ,    742080 ,     32588s , HOME_2008_11_06_221656

Andy will surely recognize why the start LBA 32 of the
first session is essential for that. :)
Others may learn from
  http://libburnia-project.org/browser/libburn/trunk/doc/cookbook.txt
  "ISO 9660 multi-session emulation on overwriteable media"
  "ISO 9660 based TOC emulation on overwriteable media"

------------------------------------------------------------

Media in state 0014h "DVD-RW sequential recording" are
handled like DVD-R. That's what you call "multi-border"
and what MMC-5 calls Incremental Streaming feature.
32 kB fixed size packets in a track and session oriented
model like with CD-R in mode TAO.

You can get DAO by option -dvd-compat or by fast-blanked
DVD-RW if the drive does not lie about feature 0021h
Incremental Streaming. My Samsung tells it is present
although it then fails. Shrug.


Have a nice day :)

Thomas