On 2015-07-16 14:40, Hans-Ulrich Hölscher wrote:
Hi Alan,
if you want to image your disks and floppies for use with simh, there's
an easy way to do it.
All you need is a (Micro-)VAX having the appropriate drive(s) running VMS.
MOUNT/FOREIGN <device-name>
COPY/LOG <device-name> yourimagename.img
DISMOUNT <device-name>
Don't worry about the error message at the end of the COPY process -
that's normal, just that copy discovers the end of media.
You get an image containing all the blocks of your device in logical
order - VMS will take care of the device details.
I've done it several dozen times, it never failed (except for defective
media).
And it even works vice versa, I often prepare images within simh and
transfer them onto my real disks and floppies.
There might be a similar way to do it with a PDP-11, too, e.g. using
"dd" with ULTRIX-11, or some other tools under RT-11, RSX or RSTS.
Under the latest version of RSX, you copy the disk using VCP, which
creates a virtual image that you can mount under RSX to play around with
later.
In short:
MOU <devicename1>/FOR
VCP CON <filename>/CRE:<type>
MOU <devicename2>/FOR
VCP COPY <devicename1> <devicename2>
DMO <devicename1>
DMO <devicename2>
VCP DIS <devicename2>
devicename1 being your physical device, and devicename2 the virtual
device created by the VCP CON command.
Jonhny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: [email protected] || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
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