Where is mfsroot.flp ?

[Yuan, Jue]

Hi all.

I just wonder where mfsroot.flp is going now. It seems it has been replaced by 
boot.flp and kernX.flp. why?

What I really want is to get a mfsroot to embed into a FreeBSD kernel, since 
kernel has option MD_ROOT to support this. I have found mfsroot.gz in boot/, 
but after uncompressing, it turns out to be as big as 4.2MB, which is too big 
for me. :-( Does anyone knows how to create a custom mfsroot, say which files 
do I need to put in to it, to make it not larger than 4MB?

Any idea would be greatly appreciated. :-)
 
-- 
Best Regards
Yuan, Jue @ http://www.yuanjue.net