Comment 46 for bug 25496

sed -i -e "s/ head -n 1 / awk 'NR==1' /g" /usr/share/initramfs-tools/scripts/casper

That will restore rambooting capability. please....Merge....IT! This bug is ancient.

TORAM is handy for reprovisioning a remote system by dropping the live-cd files in its /boot.

casper's TORAM=yes isn't as nice as debian:live-initramfs's toram= flag which identifies and copies the specific squashfs file that will be root'd. casper copies the entire cdrom which contains megs of extraneous kernels and any more stuff a 3rd party could remix into their ubuntu cd's.

I really hope the proposed live-initramfs 2.x bears fruit as both of these packages are crufty....
http://michael-prokop.at/blog/2009/09/11/debian-considerations-regarding-redesign-of-live-initramfs/