Older versions of snapshot did not boot Jessie properly with util-linux >=2.25.
Following on from going-with-the-systemd-flow-or-not-t422-90.html (That thread got fragmented and the problem seems not to do with systemd):
We found two workarounds. Patch /usr/share/initramfs-tools/init OR use a minimal fixed /dev (like live-build does). We could see what was happening but never actually nailed down the cause. Now:
https://bugs.debian.org/cgi-bin/bugrepo ... bug=823856
https://bugs.debian.org/cgi-bin/bugrepo ... bug=823069
New live-boot just got into unstable. I rebuilt an old snapshot with an empty /dev which would not boot, using a live initrd patched with files from live-boot and live-boot-initramfs-tools _1:20160511 .. Now it boots.
The updated patch I used (originally designed to enable RW mount of the live-media partition): http://exegnulinux.net/refracta/experim ... 511.tar.gz
Interestingly the recent devuan-minimal ISO from KatolaZ does boot with original initramfs-tools/init and empty /dev (probably because, such a minimal service init setup does not have to wait for udev)