makoto@nazuha  21:38:56/010223(~)> sync;sync;sync
makoto@nazuha  21:38:57/010223(~)> Stopped at     cpu_Debugger+0x10: lwz r0, r1, 0x14,
db> trace
at wskbd_cnbell+268
at wskbd_cnbell+498
at wskbd_input+68
at kbd_intr+bc
at kbd_adbcomplete+c0
at kbd_adbcomplete+5c
at kbd_soft_intr+d0
at softclock+210
at hardclock+268
at decr_intr+118
at extint_call+180
at cpu_switch+30
at mi_switch+1ac
at ltsleep+2ec
at sys_select+338
at trap+3c0
at ddblow+e0
at end+13f2fa0
at end+13f1f38
at end+21434b70
saved LR(0x7c0802a2) is invalid.
db> help
break      dwatch     print      show        w
c          examine    ps         sifting     watch
call       kill       reboot     step        write
continue   match      s          sync        x
d          next       search     trace 
delete     p          set        until
db> reboot
syncing disk... done
(ここで止っているようで、command + shift + power も効かないので)
power をしばらく押していると電源が切れる