2012/5/29 Brian C. Lane <bcl@redhat.com>:
> It is generally not a good idea to try to install extra packages when
> running the livecd. The relationship between the device-mapper and the
> size of the packages isn't 1:1 so you are likely to run out of space.
>
> --
> Brian C. Lane | Anaconda Team | IRC: bcl #anaconda | Port Orchard, WA (PST8PDT)

Yes, but with 16GB RAM it shouldn't be that easy to hit the limit. My
root partition has 10GB size and usually I have about 6,5GB free. So
installung some packages shouldn't be a problem. As I already wrote
this behaviour started to appear about 3-4 ago. What I saw at almost
the same time was that my iso images schrank with about 25-30MB in
size. This isn't just a coincidence...

--

-- joshua

The root filesystem of Fedora live CD images are compressed into a SquashFS image and a permanent or temporary virtual filesystem overlay is provided by device-mapper for write-once storage space.

See
http://wiki.sugarlabs.org/go/LiveOS_image
for more information.

--Fred