IIRC you can't read Sparc written filesystems in x86 boxen and vice versa due 
to endian difference. You need to put the disk into another sparc.

Quoting Patrick Larkin <plarkin@beth.k12.pa.us>:

> on 6/1/00 12:12 PM, Harald Barth at haba@pdc.kth.se wrote:
>
> >>> a) partly hosed if the EEPROM is not password protected
> >
> > Boot net or fix the disk in another machine.
> >
>
> I'm trying the latter at the moment.  I have the disk out and in a BSDI
> machine but I'm having no luck mounting it.
>
>
> --
> Patrick Larkin
> Network Automation
> BASD
>
>