I finally figured out a workaround. I was able to boot into a live session by passing the "live-media=" parameter from the boot menu, specifying the device path of my USB device.
(See http://manpages.ubuntu.com/manpages/hardy/man7/casper.7.html for a description of the live-media parameter.) I was using a Live Lubuntu Trusty nightly, so the specifics instructions may vary, but here's what I did: 1. Boot from my USB stick 2. At the boot menu, highlight "Try Lubuntu without installing" 3. Press F6 to bring up the kernel command line 4. Add "live-media=/dev/xxx1" to the end of the line (but before the final double hypen). In my case, the path I needed was /dev/sde1, but you will have to use the path to your install media. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1241589 Title: ubuntu 13.10 unable to boot on live usb (busy box - initramfs) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/casper/+bug/1241589/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs