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Protech

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Hi,

We have the following:

HyperV-A Server 2012 R2 hosting 2 VM's replicated to HyperV-B Server 2012 R2.

Replication is fine. The issue we have is that if we startup one of the replica VM's on HyperV-B (obviously not at the same time as the live ones on HyperV-A), the replica fails to boot with the error message:

"no uefi-compatible file system was found"

Investigation shows that HyperV-A is using "UEFI" and HyperV-B is using "BIOS"

So a few questions:

1: Is the UEFI/BIOS difference the reason that the VM will not boot/start?
2: If that is the case is there a work around?

Cheers

PT

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Protech

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Quote:
Originally Posted by Protech

Hi,

We have the following:

HyperV-A Server 2012 R2 hosting 2 VM's replicated to HyperV-B Server 2012 R2.

Replication is fine. The issue we have is that if we startup one of the replica VM's on HyperV-B (obviously not at the same time as the live ones on HyperV-A), the replica fails to boot with the error message:

"no uefi-compatible file system was found"

Investigation shows that HyperV-A is using "UEFI" and HyperV-B is using "BIOS"

So a few questions:

1: Is the UEFI/BIOS difference the reason that the VM will not boot/start?
2: If that is the case is there a work around?

Cheers

PT

123.JPG 

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Pieter

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>> HyperV-A Server 2012 R2 hosting 2 VM's replicated to HyperV-B Server 2012 R2.
Is this a Hyper-V replica ? I would expect the replicated VM would be the same generation as the original one. My guess is that  the original VM is a generation 1 and that the replicated VM is a generation 2 VM.

>> 1: Is the UEFI/BIOS difference the reason that the VM will not boot/start?
Yes.

>>2: If that is the case is there a work around?
Don't know. But I'm very interested in the case. Please keep us informed.



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donoli

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Quote:
If that is the case is there a work around?



I think that it's depends on the motherboard.  Go into the SETUP to see if there is a setting that can be toggled.
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Protech

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Thanks for the replies.

So..

Does this then mean that if you build a VM on a host that is using UEFI, that the VM will not work on another host that is using BIOS?

Have searched around on this and can't find much about this issue. Anyone have any further pointers on if this really is the case and if there is any official info no this issue online?

Thanks

 

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donoli

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Does this then mean that if you build a VM on a host that is using UEFI, that the VM will not work on another host that is using BIOS?


I would think that it would be the other way around. I was under the impression that UEFI was invented to stop non Windows OSes from running on Windows machines.  I can't find the the thread now but I had asked about that.  I wanted to buy a new desktop with Windows 10 Pro & run non windows OSes in a VM. I was interested in Lenovo but the sales girl couldn't answer my question.  She told me to call tech support.  I said, "You want to make the sale, you call them. Why should I do your work?"  Eventually, I called their tech support & they told me to call sales.  I emailed the sales girl & she never responded.   I finally had a clone built by a long time acquaintance who knew what motherboard to use.  

What is your host OS & what is running in the VM?
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ldigioia

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Reply with quote  #7 
You have two choices - rebuild/re-replicate? the non-booting machines with secure boot enabled on the host - or disable secure boot
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Pieter

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Does this then mean that if you build a VM on a host that is using UEFI, that the VM will not work on another host that is using BIOS?

I don't think so. If it depends so hard on the hardware, I wouldn't call it virtualization [wink]

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