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

[Keiichi Hasegawa]

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

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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'

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Disk partition is listed below.

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/dev/ad0s1a
devfs
/dev/ad0s1e
/dev/ad0s1f
/dev/ad0s1d
/dev/ad1s1d 

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I guess it occurred because of ad1s1d.

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

Thank you.

 

[SirDice]

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

 

[Keiichi Hasegawa]

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.