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Yes, I know that officially Hyper-V Gen 2 VMs don't support Windows 7, but maybe there is some workaround or fix? Had anybody such experience?

I created new Gen 2 VM, converted my Win7 VHD to VHDx but without a luck. It simply doesn't recognize it.

Hyper-V host is Win10 Pro, if that matters.

Suncatcher
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    If it's not supported maybe you should stop trying to make it work. Why do you want/need to do this? – joeqwerty Apr 13 '17 at 16:21
  • Because Gen 1 doesn't support widescreen resolutions and I need it. – Suncatcher Apr 13 '17 at 16:37
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    You can use RDP to a virtual machine instead of Hyper-V console. In that case any required resolution is possible. – Net Runner Apr 15 '17 at 06:19
  • @NetRunner, I know, but [messed icons after each RDP connection](https://superuser.com/questions/160421/desktop-icons-rearrange-after-using-remote-desktop-connection) drive me crazy :) – Suncatcher Apr 15 '17 at 17:38

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Microsoft released a tool for converting Hyper-V Gen 1 vms to Gen 2: https://technet.microsoft.com/en-us/itpro/windows/deploy/mbr-to-gpt?f=255&MSPPError=-2147217396

Like you said, Pre-Win10 OS is not officially supported but this tool will convert MBR to GPT and can be run from within Win10 (version 1703 or later) or booted into PE.

Nick Prignano
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