[Info-vax] MicroVAX 3100-30 - won't boot...

[Steven Schweda]

AdeV wrote:

> The "original" disk (which is a CDR copy) - unknown. I used this disk to
> make an NRG image file using Nero 6, which I converted into an ISO using
> nrg2iso. This ISO was then used to (successfully) install SimH.
>
> The NRG image I burned back to a Verbatim CDR, using a Dell CD writer,
> again with Nero 6 - at its slowest supported burn speed of 4x.

   Well, that sounds like enough to wreck the data several
times over.

> I also downloaded a copy of VMS7.3 from a well known torrent website,
> this was in "img" format. I've successfully used that to install a simh
> instance as well, but I am unable to burn that to a real disk, as all
> the utilities I've tried simply complain about it.

   Perhaps because it holds an ODS2 file system, not a simple
ISO-9660 file system.

> FWIW, both the original CDR and my newly burnt copy are able to boot as
> far as the VMS message - the new CD somewhat more reliably than the
> original one.

   I've made good CD-ROM copies using cdrecord.  I haven't
tried using Windows software.