I have a
11/73. The disk is a Maxtor 2190.
How to create an Image of the contents of this disk?
Replace the PDP-11 CPU and
RAM with a VAX CPU and RAM, preferably KA-650
/ KA-655, plug in a DELQA if there is none, netboot NetBSD, dump with
dd(1) using the "noerror" and "sync" options.
At least thats what I would do.
Another possibility might be to put the disk in a VAX 2000, boot VMS over the
network from another VMS machine or simulator and use BACKUP /PHYSICAL to copy
the disk over the network.
On the plus side, the 2000 would likely understand the low level format which
random MFM controllers designed for PCs would be unlikely to. On the minus
side, with older versions of VMS, it may be difficult to do much with the
image other than to restore it to another disk of the same type, which is not
going to be very useful. The online help on newer VMS versions suggests it
may be possible to restore the image to any disk of the same size or larger
but I haven't tried it.
It may also be possible to boot some other OS on the 2000 and use that to
perform the imaging operation.
Regards,
Peter Coghlan.