26 Feb
2009
26 Feb
'09
5:32 p.m.
Tobias Russell wrote:
I've been trying to get BSD 2.11 running on my
uPDP-11/73. Rather than
going the vtserver route, I thought I'd try to speed things along by
making a disk image under simh and then copying it onto a SCSI disk for
use on the PDP-11.
I successfully built a 300MB disk image under simh from the BSD 2.11
tape and then copied this onto the SCSI disk with:
dd if=bsd211.dsk of=/dev/sda
However, when I put the disk onto the -11 and try to boot DU0, it just
hangs.
Does it boot cleanly from simh?
What type of scsi controller are you using? I seem to recall some brands
of mscp scsi cards (like one I have) require a "fix" to the boot loader
otherwise they hang. my brain is fried but I think it's raboot.
your technique should work. I've done it. But I had to patch the boot
loader (raboot) and recompile it (using simh as I recall) and reinstall
it. I found a site on the web (probably someone here :-) detailing it.
I can dig up the file if you need. I can also send you a binary of the
loader.
If you are board you can toggle in raboot with the patch. Or, you
should be able to halt the machine and look at the pc and single step...
which '11?
-brad