FWIW, I noticed I was down-level on about 100 packages, including initramfs-tools and kernel. I updated, rebooted, recreated the bootable USB key, applied revision 618, and still did not experience the problem seen observed by Pete.
-- casper USB media fails to boot: USB storage device not detected, drops to (initramfs) prompt https://bugs.launchpad.net/bugs/363038 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs