[rescue] Booting error on Sparcstation 2

[Dark Den]

Hello.

We have  error

Rebooting with command:
Boot device: /sbus/esp at 0,800000/sd at 3,0 File and args:
Root on /sbus/esp at 0,800000/sd at 3,0 FSTYPE 4.2
Boot: vmunix
Boot: Lookuppn failed: Not a directory  (errno 20)
Illegal instruction

We use SPARCstation 2, can anyone tell what is wrong? That's happen after command banner boot look like 

Rebooting with command: anner