24 Feb
2009
24 Feb
'09
11:59 a.m.
On Tue, Feb 24, 2009 at 11:44 AM, David Betz <dbetz at xlisper.com> wrote:
I think I would be satisfied just having raw images of the disks. There is
software (even some I've written myself!) that can read those images.
Maybe you could use VTServer to copy the disk images from a real
PDP-11 to a PC. I've never tried that and don't know how to go about
trying that.
What I did to backup some RT-11 RX02 floppies was boot a PDP-11 into
2.11BSD and then use dd to read the floppies into image files on the
PDP-11, then used ftp to get the image files from the PDP-11 to a PC.
I also wrote a simple utility to undo the sector interleaving as is
done by rxfactr() in the RX02 driver in 2.11BSD.
I didn't quite get this scheme all working correctly with RX01
floppies yet as the total image size is not a multiple of 512 bytes
and that would take some extra fudging to get right.