--- a/laser-disk.rst	Tue Jul 21 22:58:49 2009 +0300
+++ b/laser-disk.rst	Wed Jul 22 21:36:08 2009 +0300
@@ -55,6 +55,10 @@
   http://www.cdrkit.org/
   http://en.wikipedia.org/wiki/Cdrkit
 
+*** Installation.
+
+  $ sudo apt-get install wodim genisoimage
+
 *** Make iso image.
 
   $ genisoimage -A "<info>" -gui -J -R -o <img-file> <dir1> <dir2> ...
@@ -68,11 +72,27 @@
 
 *** Burn iso image.
 
-
-
 ** cdrskin.
 
 See
 
   http://scdbackup.sourceforge.net/cdrskin_eng.html
   http://en.wikipedia.org/wiki/Cdrskin
+
+*** Installation.
+
+  $ sudo apt-get install cdrskin
+
+** xorriso.
+
+xorriso copies file objects from POSIX compliant filesystems into Rock Ridge
+enhanced ISO 9660 filesystems and allows session-wise manipulation of such
+filesystems. It can load the management information of existing ISO images and
+it writes the session results to optical media or to filesystem objects.
+
+Vice versa xorriso is able to restore file objects from ISO 9660 filesystems.
+
+See
+
+  http://scdbackup.webframe.org/xorriso_eng.html
+  http://en.wikipedia.org/wiki/xorriso