Hi Lone Wolf, > > $ perf stat -e instructions gzip <initramfs-linux-lts-fallback >/dev/null > > $ perf stat -e instructions lzop <initramfs-linux-lts-fallback >/dev/null > > Those outputs appear to be from unpacking initramfs. > I do think OP and Giancarlo were talking about creating an initramfs . Oh, sorry for the noise if I'm wrong, but /boot/initramfs-linux-lts-fallback.img is gzip-compressed here. I uncompressed it to give the initramfs-linux-lts-fallback used above. I thought the compression of it was the step OP and Giancarlo were discussing, as you say. -- Cheers, Ralph.