Imaging and Emulating Rainbow

Dave Wade dave.g4ugm at
Sun Aug 14 07:41:32 CDT 2016

Looking at

the RD51 is a 10Mb Seagate ST412 disk with a DEC label on it. I think you
should therefore be able to image it with one of these:-

Now I have two bare boards for these obtained at great expense because of
the Royal Mail charging me £8.00 (about $10.00) for collecting the VAT which
just about doubled the cost.
I also have a Beagle Board which is needed to run the thing, but I haven’t
obtained any of the other parts needed to build them, and I am not going to
get one built before (insert movable deadline)...
... perhaps we could get the bits an build one at Dec Legacy.. Assuming I
get there....

Dave Wade

> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at] On Behalf Of Rob
> Sent: 14 August 2016 13:23
> To: rob at; 'General Discussion: On-Topic and Off-Topic Posts'
> <cctalk at>
> Subject: RE: Imaging and Emulating Rainbow
> > -----Original Message-----
> > From: cctalk [mailto:cctalk-bounces at] On Behalf Of Rob
> Jarratt
> > Sent: 14 August 2016 11:55
> > To: General Discussion: On-Topic and Off-Topic Posts
> > <cctalk at>
> > Subject: Imaging and Emulating Rainbow
> >
> > I have a Rainbow 100+ with a working hard disk. I want to image the
> > disk before it fails and then emulate the Rainbow. The disk is an RD51
> > and appears to have 4 partitions on it.
> >
> >
> >
> > For imaging my first thought is to put the disk into a MicroVAX II,
> > net
> boot the
> > MicroVAX into VMS and do a BACKUP/PHYSICAL, copying the image to a
> > SIMH tap file.  There shouldn't be any issues with this I assume?
> >
> Oh dear. VMS would not let me MOUNT/FOREIGN, it said:
> 	%MOUNT-F-FORMAT, invalid media format
> So I couldn't mount it to do the BACKUP/PHYSICAL.
> What options do I have to image this disk?
> Regards
> Rob

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