Comment 2 for bug 965735

Possible workaround:

I discovered that my livecd boots all the way through if I remove the mdadm hook from iniramfs:

    rm /path/to/livecd-chroot/usr/share/initramfs-tools/hooks/mdadm

As a result, mdadm arrays are still assembled by my livecd filesystem, but they're not assembled by the initrd phase.

It seems to me that this *should* be OK when building a livecd, but I'm not knowledgeable enough to know if it has some other undesirable consequeunces. If I run into anything, I'll make sure to reply here...