initramfs is a cpio archive instead of a gzip file. In addition, lsinitrd does not display the whole archive onlyAuthenticAMD.bin and GenuinIntel.bin, which is also all that is contained in a manual cpio extraction of the file. It looks like this behavior began about a year ago. RHEL 6 initramfs is a gzipped cpio archive.
Is this change deliberate? If so, how can the whole archive be extracted and reassembled?