Keep getting "Data Access Exception" after entering "boot /fd" at the
"ok" prompt.  This is on a SPARCstation IPC (4/40) sun4c.

What I did:
o downloaded "boot-142.fs.gz" from "/pub/NetBSD/NetBSD-1.4.2/sparc/
  installation/bootfs".  (I noticed a "syboot-142.fs.gz" in there; should
  I be using that?)
o `gunzip boot-142.fs.gz; mv boot-142.fs boot.fs`
o `dd if=boot.fs of=/dev/rfd0c`
o `shutdown -h now`
o got the ">" prompt, so entered "n"
o at the "ok" prompt, entered "boot /fd"
o tried it again after "setenv sunmon-compat? false"

Any tips much appreciated.  TIA.

henry nelson