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pdrakos

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Guest OS failing to boot on a Hyper-V guest.

I have a new HyperV 2016 host that I have installed a guest on. Guest has been working for a coupe of weeks. This morning, the host crashed and then could not reboot. Received the following error:

'Host' has encountered a fatal error.  The guest operating system reported that it failed with the following error codes: ErrorCode0: 0xEF, ErrorCode1: 0xFFFFD188A76E9280, ErrorCode2: 0x0, ErrorCode3: 0x0, ErrorCode4: 0x0.  If the problem persists, contact Product Support for the guest operating system.  (Virtual machine ID 0D34259E-2CCF-4BBA-8585-74FAB2D381C3

ANy ideas here? The new server is a DC and is causing issues being down. If I can't get a quick solution will need to move onto backup DC.
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Cliff Galiher
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What do you see on the virtual console when you attempt to start the VM?
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pdrakos

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When I turn the machine on, it tries to boot of the VHD, then proceed to try a PXE boot. After that times out, get "No operating system was loaded. Press a key to retry the boot sequence.

It says that the SCSI disk had no UEFI-compatible file system.
So this doesn't sound like a VM or Hyper-V issue.  Sounds like the OS on the guest got nuked somehow.  A restore is probably the fastest recovery method at this point, given that behavior.
Any idea why the host crashed?  Bad disks ?
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Don't think it was a bad disk. I'm not onsite, but no indications of issues. I can get into the location of the VHDX file and manipulate the file (snapshot, merge snapshot) with no error. The host didn't crash, just the guest.
sorry, assumed host when you said; "This morning, the host crashed and then could not reboot. "  :-)
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Sorry, meant guest.
Was/is there an A/V client installed on the guest?
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no, it was a brand new server, had only been up a week. Hadn't gone into production fully yet.
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pdrakos

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