/boot/loader を 5.5-RELEASE のものに変更すれば OK.
/boot/loader
7.1-RELEASE のものによるエラーメッセージ.
Can't work out which disk we are booting from. Guessed BIOS device 0xffffffff not found by probes, defaulting to disk0: /usr/src/sys/boot/i386/loader/../../common/module.c:958
むだばなし Archive