Re (2): Archiving content of a directory on a DVD-R.

[peter@easthope.ca]

    From: "Thomas Schmitt" <scdbackup@gmx.net>
    Date: Sat, 26 Feb 2022 18:29:45 +0100
> What messages do you get printed when the CD-or-DVD medium is inserted
> and you do:
> 
>   xorriso -outdev /dev/sr0 -toc

root@joule:/home/root# xorriso -outdev /dev/sr0 -toc
xorriso 1.5.2 : RockRidge filesystem manipulator, libburnia project.

Drive current: -outdev '/dev/sr0'
Media current: CD-R
Media status : is blank
Media summary: 0 sessions, 0 data blocks, 0 data,  703m free
Drive current: -outdev '/dev/sr0'
Drive access : exclusive:unrestricted
Drive type   : vendor 'SONY' product 'CD-RW CRX320E' revision 'NYK2'
Media current: CD-R
Media product: 97m26s66f/79m59s71f , CMC Magnetics Corporation
Media status : is blank
Media blocks : 0 readable , 359844 writable , 359844 overall
Media summary: 0 sessions, 0 data blocks, 0 data,  703m free
root@joule:/home/root# 

Thanks.  I should have read the fine print at the center of the disk.

To squeeze the data, add -zisofs.

FilesToDVD () { \
  printf "Insert open or new DVD-R.";
  read t;
  cd ~/MY0.Bak/;
  xorriso -for_backup -dev /dev/sr0 \
          -update_r . / \
          -zisofs \
          -commit \
          -toc -check_md5 failure -- \
          -eject all ;
}

I have a supply of CD-Rs and DVDs aren't accessible at present. 
Likely xorriso provides a way to spread an archive over multiple CDs.  
Documentation or example?

Thx,                               ... P.


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