Comment 4 for bug 292493

I experienced the same issue when trying to install Ubuntu Jaunty (9.04) from a hard drive partition. I copied the content of the live CD image from http://cdimage.ubuntu.com/daily-live/20081220 a partition of /dev/sda and then booted from it. The exact same dialog box described by Riobard was then shown at the end of the installation configuration process. I was trying to install Ubuntu on a different partition than the one containing the live cd's content obviously.