There is a shortcut

    #  rdev -r /mnt/floppy/boot/vmlinuz 49152

that can be performed on any compressed kernel
you care to use and which makes

    load_ramdisk=1 prompt_ramdisk=1

superfluous. The kernel is simply said to use
both of these by default, due to

    49152 = 2^14 + 2^15.

Should you ever like to turn them (or it) off
the booting of grub should then include

    load_ramdisk=0  prompt_ramdisk=0.