[Simh] VHD support in SIMH

[Mark Pizzolato]

Differencing VHDs are supported.

See
     sim> HELP RQ Attach

for an example of how to create one.  Once created you merely attach it.

From: Simh [mailto:simh-bounces at trailing-edge.com] On Behalf Of Robert Jarratt
Sent: Friday, March 25, 2016 6:32 AM
To: simh at trailing-edge.com
Subject: [Simh] VHD support in SIMH

I know that SIMH can support VHD files. But, can it support difference files using the VHD format? If so, how do you set it up?

The reason I ask is that I use an online backup service, and every time I run SIMH it has to back up the whole virtual disk. It would help if it would only backup the data that has changed, as would be present in a VHD difference disk. I did write my own differencing code for SIMH a while back, but I have abandoned that now.

Regards

Rob
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