live-initramfs 1.173.1-1 (ia64 binary) in ubuntu lucid

 live-initramfs is a hook for the initramfs-tools, used to generate a initramfs
 capable to boot live systems, such as those created by live-helper. This
 includes the Debian Live isos, netboot tarballs, and usb stick images.
 .
 At boot time it will look for a (read-only) media containing a "/live"
 directory where a root filesystems (often a compressed filesystem image like
 squashfs) is stored. If found, it will create a writable environment, using
 aufs or unionfs, for Debian like systems to boot from.
 .
 You probably do not want to install this package onto a non-live system,
 although it will do no harm.
 .
 live-initramfs is a fork of casper <http://packages.ubuntu.com/casper/>.