[jwatt]

For me `isoinfo` doesn't like the format of the .iso file ("CD-ROM is NOT in ISO 9660 format"). Using bsdtar worked though:

  bsdtar xOf xxx.iso initrd | gzip -dc | cpio -idv --no-absolute-filenames "root/fumagician*"

(And of course then running `root/fumagician/fumagician` in either case.)