initrd.lz

• ​Ubuntu日本語フォーラム / Ubuntu9.10 UCKでinitrdの編集
  • ​LiveCDCustomization - Community Ubuntu Documentation

    Also, I have read a few articles mentioning that Karmic (9.10) uses initrd.lz instead of initrd.gz. I do not know if this is true, but should mention it in case you are not getting the expected results. To unpack the initrd.lz file, you need to do this:

    # cd extract-cd/casper
    # mkdir lztempdir
    # cd lztempdir
    # lzma -dc -S .lz ../initrd.lz | cpio -imvd --no-absolute-filenames
    

    And to re-create the initrd.lz file:

    # cp ../initrd.lz ../inird.lz.orig
    # find . | cpio --quiet --dereference -o -H newc | lzma -7 > ../initrd.lz