16 Feb
2019
16 Feb
'19
9:35 a.m.
On Feb 16, 2019, at 9:10 AM, Lyle Bickley via cctalk
<cctalk at classiccmp.org> wrote:
Bill,
On Sat, 16 Feb 2019 13:55:10 +0000
Bill Gunshannon via cctalk <cctalk at classiccmp.org> wrote:
Like Lyle I have SCSI controllers on my PDP-11/73, and my PDP-11/44. I?ve actually
installed RT-11 and RSX-11M+ from CD-R. There is another option, and I?ve used this with
RL01?s and RL02?s. With those, I?ve used a MicroVAX II or MicroVAX 3 and VAX/VMS. I used
to have a dedicated MicroVAX 3 setup with RA73 drives for this. I still have the
hardware, but it hasn?t been used since 2000. If you have a way to hook the RA81 up to a
VAX, I think that would be an option as well.
Zane
So, I used SIMH to do an install of a complete OS
on
an RA81 disk. I would like to move this to a real disk
and try it on a real PDP-11. Is there a way to do this
using dd on a BSD machine? I tried but it created a
non bootable system. Well, actually, it starts to boot
but then fails very early in the startup process. I used
"dd if=filename of=raw-device bs=1024". Could it be that
the block size needs to be something else?
I know that VTServer and PDPGUI can move disk images but
it would take a week at 9600 baud and I think very little
likelihood of it ever completing successfully.
bill
In order to do this easily, I have SCSI controllers (and disks) on my
two primary PDP-11 systems (11/34 and 11/83).
1. I copy the image file I want on a "native" drive using a PC w/SCSI
and Linux to a SCSI disk (or removable media) using "dd".
2. I move that drive/media to the SCSI "chain" on a PDP-11.
3. I use RT-11 to move the image from the SCSI drive/media to the
"native" HDD.
Its a bit cumbersome, but I used this method for years and it hasn't
failed me yet ;)