Can I backup my entire Ubuntu installation to ISO DVD?
Solution 1:
Remastersys is a backup tool that creates your own distro, an .iso as a live CD to install on another machine. This can include all your data, and you can select whether to include the home folder or not. Here is the Remastersys sourceforge page .
I hope this helps.
Solution 2:
While not directly related to backing up your system to DVD ISO media, you should have a look at the excellent community documentation for backing up your Ubuntu system. Backup Your System