-R .comment (whose long version is --remove-section) specifies to remove the .comment section and -S (--strip-all) to not copy relocation, symbol and debug information. objcopy -R .comment -S vmlinux arch/x86/boot/compressed/vmlinux.bin
arch/x86/boot/compressed/vmlinux.bin is a prerequisite for arch/x86/boot/compressed/vmlinux.bin.gz. arch/x86/boot/compressed/vmlinux.bin with arch/x86/boot/vmlinux.bin.