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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>Differencing VHDs are supported.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'>See<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> sim> HELP RQ Attach<o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'> for an example of how to create one. Once created you merely attach it.<o:p></o:p></span></p><p class=MsoNormal><a name="_MailEndCompose"><span style='color:#1F497D'><o:p> </o:p></span></a></p><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> Simh [mailto:simh-bounces@trailing-edge.com] <b>On Behalf Of </b>Robert Jarratt<br><b>Sent:</b> Friday, March 25, 2016 6:32 AM<br><b>To:</b> simh@trailing-edge.com<br><b>Subject:</b> [Simh] VHD support in SIMH<o:p></o:p></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-GB>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?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>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.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>Regards<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-GB>Rob<o:p></o:p></span></p></div></div></body></html>