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Re: a NERO user familiar with backing up data on multisession CDR, how do I do it in Linux too?



Hi,

> ... now switched to Linux ... multi-session ... CDR ...

I myself am not into multi-session. So a few general
hints. (And a test wether i'd could help myself.)

A bit an outdated HOWTO (google for "cdrecord howto" or "mkisofs howto")
  http://www.faqs.org/docs/Linux-HOWTO/CD-Writing-HOWTO.html#ss4.18
points to original docs README.multi contained in cdrtools.

That would be this URL:
  ftp://ftp.berlios.de/pub/cdrecord/README.multi

(Looks a bit more detailed than the examples which i dimly
 remember. Probably should explore the steps manually
 and then write your preferred method into a shell script.) 

By further googling i found (german)
  http://www.willemer.de/informatik/unix/licd.htm
with examples.

The "." is the data source (current working directory).
You would replace it by the addresses of your files or directories.
First session:
  mkisofs -J -R -o ../image.iso .
  cdrecord -v speed=2 dev=0,3,0 -multi ../image.iso

Following sessions:
  TRACKPOS=`cdrecord -msinfo dev=0,3,0` 
  mkisofs -J -R -f -o ../image.iso -C $TRACKPOS -M 0,3,0 .
  cdrecord -v speed=2 dev=0,3,0 -eject -multi ../image.iso

The final session shall leave out cdrecord option "-multi".
(If you stumble over the strange quotation marks,
 on a bash or ksh shell a more modern expression would be:
  TRACKPOS=$(cdrecord -msinfo dev=0,3,0)
)

With modern hardware you may combine mkisofs and cdrecord in
one pipe command without any image file buffered on disk:
  mkisofs -J -R -o -  ...your.files.and.dirs...  | \
  cdrecord -v driveropts=burnfree speed=24 dev=ATA:0,0,0 -multi -

(This example shows more modern parameters. If you need help
 with details of mkisofs or cdrecord, read
   http://cdrecord.berlios.de/old/private/man/cdrecord-2.0.html
   http://cdrecord.berlios.de/old/private/man/mkisofs-2.0.html
 and if you feel well preprared, ask for further help here.)


If you need help from the author of mkisofs and cdrecord,
it would be wise to upgrade to the newest version:
  ftp://ftp.berlios.de/pub/cdrecord/alpha/cdrtools-2.01.01a14.tar.bz2
But any Linux distribution should offer sufficient older
versions of mkisofs, cdrecord and their man-pages. The
multi-session feature is not new at all.


Have a nice day :)

Thomas


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