"Can't work out which deisk we are booting from." and "can't load kernel".

I upgraded FreeBSD 9.3 to 10.3.
After rebooting, boot loader stopped on stage 2.

Can't work out which disk we are booting from.
Guessed BIOS device 0xffffffff not found by proves, defaulting to disk0:

can't load 'kernel'


Disk partition is listed below.



I guess it occurred because of ad1s1d.

I can't solve this problem.
Please give any help.

Thank you.


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At the "OK" prompt, does lsdev output anything?

Thank you for your comment.

lsdev showed disk name but slice names were not shown.

I didn't have much time, so I used LiveCD mode of ISO CD. Then backuped files and reinstalled OS.

Anyway, it would be help for the same problem if there is a solution.