That's probably because the edgy initrd binary cannot handle 2.4 style initrds anymore.
** Changed in: kernel-image-2.4.27-i386 (Ubuntu) Sourcepackagename: kernel-image-2.4.27-i386 => initrd-tools Status: Unconfirmed => Confirmed -- The kernel does not boot https://launchpad.net/bugs/63711 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs