Dear All,
I must be missing something. I do not seem to install and retain packages on liveDVD installed on a USB stick, despite using the data persistence options on livecd-iso-to-disk, viz:

# livecd-iso-to-disk --reset-mbr --overlay-size-mb 1024 \
                     --home-size-mb 512 \
                     <path>/SL-60-i386-2011-03-07-LiveDVD.iso \
                     /dev/<partition name>

The programs livecd-tools and liveusb-creator are retained on reboot, but not the others. Also, configuration data, etc. stored in the home directory, /home/sluser, are retained. 



Some sample installs that disappeared (Id not matter whether I used yum, ume:
$ su -c 'rpm -Uvh http://download.fedora.redhat.com/pub/epel/6/i386/epel-release-6-5.noarch.rpm'
$ su -c 'yum install yumex'
$ su -c 'yum install xfig transfig fig2ps gv'
$ su -c 'yum install ocaml ocaml-emacs ocaml-lablgl ocaml-lablgl-devel ocaml-lablgtk ocaml-lablgtk-devel ocaml-lablgtk-doc ocaml-doc'
$ su -c 'yum install latex2rtf latex2html'


Ragards,

William.