[Simh] RE: VMS "initialize /badblocks=" with SIMH disk image

[David B Sneddon]

Will Kranz was overheard to say:
> Greetings:
> I'm a newbie in the vast field of VMS and SIMH in particular, but am having
> what seems odd behavior doing this.  If I just initialize a new image 
> all works
> as it should, and the bad block table is empty.  However if I want to force
> an inaccessable region via the use of bad blocks (more below) it creates
> the link to the badblk.sys in the header, but doesn't seem to write the 
> data block
> to the image at the end of the file where it says it should be.  Has 
> anybody
> noticed this, or have a suggestion other than 'don't add bad blocks to 
> an image
> file!'?
> 
> Since what I am attempting is a bit odd, let me explain that I want to 
> create
> a hybrid VMS CD image that also contains an ISO region.  I came across a
> nice discussion of this at  http://www.djesys.com/vms/cdrom.html.  It 
> points
> to http://support.tditx.com/~odsiso/index.html which is accessable but 
> about
> 4 years old with some stale links.  I thought SIMH might be the perfect 
> vehicle
> for this but hit the snag above.  If anyone has played with hybrid CDs 
> and VMS
> I'd be guite interested in how you did it.  The stale links are for some 
> of the
> utilities that help support the process, they seem to have disappeared 
> beyond
> site of my search engines....
> 
> Thanks, Will

Hello Will,

I have had success using the details at the following:

http://www.tmesis.com/CDrom/

I was able to create a dual ISO/ODS disk image.

Regards,
Dave.
-- 
David B Sneddon (dbs)  VMS Systems Programmer  dbsneddon at bigpond.com
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