[15:30] <xnox> realtime-neil:  apt-cdrom dynamically enrolls the iso at runtime. Assuming it is signed by a key that is trusted out of the box.
[15:31] <xnox> normally partman will run the detection..... and use os-prober.
[15:31] <xnox> but it shouldn't if one has preseeded what it should do.....
[15:32] <realtime-neil> xnox: you're saying apt-cdrom generates the sources.list file associated with the top of the volume?
[15:34] <realtime-neil> xnox: whoah, there's a whole man page for this ... I'll start reading
[15:36] <realtime-neil> xnox: thanks for the help; I'll start digging into these