mkbootdisk failure

Using Fedora Core 3.  Executing mkbootdisk generates a "no space left on
device" message.
Using the verbose option, it looks like the copy of initrd.img isn't
completed.
Mounting the boot disk, shows that vmlinuz is 1.423 Mbytes and initrd.img
is 32256 bytes.
Is there a reduced vmlinuz that I can use?