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HYPER V OS KEEPS CRASHING

Inz 0 Reputation points
2025-08-20T03:37:04.0033333+00:00

So, my server is hosting my hyper v vm and when I connected an external hdd, the hyper v crashed and now it only boots up, ask if I want to troubleshoot, shutdown or restart machine. When I mount the .vhdx to the local machine, I can see that all data and document is in tack, so possibly only the OS is corrupted. I have tried all troubleshooting options on that is optional at bootup.

Please advise if there's a way I can create a new vm, get all all my data dto the new created vm amd operate on it as if it was the previous one.

Thanks

Windows for business | Windows Server | Storage high availability | Virtualization and Hyper-V
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  1. HarryPhan-2691 8,170 Reputation points Independent Advisor
    2025-08-21T06:37:22.2233333+00:00

    Dear Inz,

    Based on your description, it appears the operating system within the VM has become corrupted following the external HDD connection, but the .vhdx file still contains all your data and documents. That’s encouraging, as it suggests the virtual hard disk is structurally sound.

    To proceed, you can absolutely create a new virtual machine and attach the existing .vhdx file to it. This will allow you to access your data and operate within a fresh OS environment. Here’s how:

    1. Create a New VM in Hyper-V Manager Use the same generation (Gen 1 or Gen 2) as the original VM for compatibility. Configure memory, CPU, and network settings as needed.
    2. Attach the Existing VHDX File During setup, choose “Use an existing virtual hard disk” and point to your .vhdx file. Alternatively, you can add the disk after creation via VM settings.
    3. Install a New OS (Optional) If the original OS is non-functional, you may install a new OS and mount the .vhdx as a secondary disk to recover files. You can then migrate data or reconfigure the environment as needed.
    4. Validate Data Integrity Once the VM is running, confirm that all critical files and configurations are accessible.

    If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.

    Best regards,

    Harry Phan

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