[Info-vax] Disk image viewable in Windows/Linux

[Paul Sture]

In article 
<5cedb60d-add7-4ebb-8eac-1400baf39d97 at v3g2000vbx.googlegroups.com>,
 Hans Vlems <hvlems at freenet.de> wrote:

> On Aug 6, 2:03 pm, Paul Sture <paul.nos... at sture.ch> wrote:
> > In article <j1iuf0$n4... at speranza.aioe.org>,
> >  Wilm Boerhout <wboerhout-rem... at this-gmail.com> wrote:
> >
> > > Neither PersonalAlpha nor CHARON-AXP nor CHARON-VAX nor SIMH add
> > > metadada to disk containers. These containers are interchangeable with
> > > LD-created containers. It's just a load of bytes.
> >
> > > So you can create a container with LD, $INIT it and fill it with data,
> > > then dismount and disconnect the container, ftp /binary it to the
> > > outside world, where all mentioned products (and probably a few others)
> > > will happily see it as a disk container file.
> >
> > I think we've found the cause of the confusion.  The OP seems to think
> > that these products create something akin to the container files used by
> > VMware, Virtual PC, VirtualBox et al.
> >
> > The VAX and Alpha emulators just allocate a bunch of blocks and present
> > them to VMS to do with as it wishes.
> >
> > Provided that the original VMS disk is a model recognized by the
> > emulator you are using, I see no reason why you could not put it on a
> > *nix system and use "dd" to create a file containing a physical copy,
> > and use that in an emulator.
> >
> > @Sum1:
> >
> > I would recommend that after creating your LD container you perform an
> > INIT/ERASE to ensure that the container is pre-filled with zeroes, and
> > doesn't just pick up a load of garbage.
> >
> > --
> > Paul Sture
> 
> Correct. Out of curiosity I tried this. Made a dd transfer of a VAX/
> VMS V7.3 disk on a
> Tru64 system. Copied it to VMS and mounted it with LD: worked. That
> same file was
> also burned on a CD and the CD was bootable (for a VAX of course).
> Burning a physical backup image resulted in a CD that couldn't be read
> though.

When you say "a physical backup image" do you mean a backup saveset 
generated by BACKUP /PHYSICAL ?

-- 
Paul Sture