Bill, On Sat, 16 Feb 2019 13:55:10 +0000 Bill Gunshannon via cctalk <cctalk@classiccmp.org> wrote:
> 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 ;) Cheers, Lyle -- 73 NM6Y Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero"