extract file initrd.lz (located in install iso)

[Hakunka-Matata]

initrd.lz is a Lzip file in the casper directory of the Ubuntu install iso. I'm having trouble finding a program that will extract it.
Lzip - fails
file-roller fails

anybody know how to extract it?

[jerrrys]

check this out

https://answers.launchpad.net/ubuntu/+source/casper/+question/89310

[Hakunka-Matata]

Thanks, that did it.