The reason this broke all of a sudden is that between Herd 1 and Herd 2 we switched the installer from booting with the -386 kernel (which isn't SMP-capable) to -generic (which is), so suddenly the second core appeared and base-installer didn't know how to deal with it.
-- feisty-alternate-i386 for herd-2 cannot install kernel from CDROM https://launchpad.net/bugs/79109 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs