Like Fedora DVDs, is it possible to copy one or more packages from the Ubuntu 11.04 installation DVD to the desktop and install or compile the package from there. I have tried the file browser, Terminal and after confusing CD Live for DVD Distribution - apt-cdrom to discover the existence of a "Packages" like directory.

I am working on Mythbuntu 11.04 which like all media now lack dialup capacity in the initial installation. No progress can be made without connecting the Myth program to a television program guide website.

Although I don't have a Ubuntu CD handy, I would think like Debian Live and Knoppix, the packages would be in a squashfs file. If I remember correctly, Knoppix was the first to use squashfs to compress a large file system small enough to fit on a CD, example: squashing 2.5GB of data to 700MB so it can fit on a CD. It would then be extracted into memory during boot up. If your Ubuntu CD has a filesystem.squashfs or similar file on it, which should also be the largest file on the CD, you may be able to use unsquashfs to extract it or parts of it to then find packages within. It is also possible unsquashfs is installed in Ubuntu. Google unsquashfs for relevant links.