Kernel panic: VFS: Unable to mount root fs on 01:00

[Xeno Campanoli <xeno@eskimo.com>]

As my subject line indicates, I'm getting the diagnostic:

	Kernel panic: VFS: Unable to mount root fs on 01:00

when I try to boot up with my home grown kernel.  I've tried several
things with lilo on this, but I'm stumped.  rdev indicates the root
partition is /dev/hda1, which is what I expect, and I seem to have good
lilo entries, as follows:

image=/vmlinuz
        label=Linux
        read-only
        initrd=/boot/initrd

and in fact with the dist kernel this lilo entry works fine, but with
the one I get with make bzImage I get stuck on boot as stated.  Can
someone point me to a specific doc to read on this problem, or is my
mistake obvious?
-- 
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xeno@eskimo.com