duped laptop disk not bootable

any advice on the following

just duped a laptop disk with dump|restore

put it into new notebook

i get invalid partition
i get the 1st stage boot prompt with boot failure
message and the expected default that failed 
0:ad(0,a)/boot/loader

the duped drive has the FBSD slice as ad0s1e

if i say at this point

0:ad(0,e)/boot/loader  OR if i say;
0:ad(0,e)/kernel

i can boot to my custom compiled kernel
sometimes BUT NOT always i can boot with just saying;

0:ad(0,e)

i have tried making a boot.config, then a boot.conf
file with 0:ad(0,e)/boot/loader in there

doesn't work, i still have to boot it manually by
saying the exact same thing as above

i've tried putting a reference in loader.conf to try
to get the loader to reckognize boot.config by just
specifying the file name /boot/config in loader.conf
but maybe i don't have the right syntax

even tried doing a disklabel -B /dev/ad0s1, i thought
maybe there weren't any boot blocks, 
tried disklabel -w -B also

tried editing the disklabel disklabel -e ad0
and tried changing the partition label from e to a but
even as root the system wouldn't lemme write to the
disk when editing i finished

fresh out of ideas, anyone know how to do this so it
boots by itself again? HOW/where DO I SPECIFY THAT ad0
s1e, is the right place to boot from with out doing
this manually each and every time?

i haven't tried doing anything w/ boot0cfg but i
figure i'm past that point anyways if i get to where
i'm now getting to..


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