Possibly related:
lucid 20100324 alternate cd: "no common cdrom drive" error
https://bugs.launchpad.net/ubuntu/+source/debian-installer/+bug/546489
Possibly related:
lucid 20100324 alternate cd: "no common cdrom drive" error
https:/ /bugs.launchpad .net/ubuntu/ +source/ debian- installer/ +bug/546489