Hyper-V disk merge fails

Question

Getting error 'SERVER' background disk merge failed to complete: An internal error occurred. (0x8007054F). (Virtual machine ID 5C49EEE5-37BD-4E76-B56D-A98B1E90BC5B). Noticed when I was getting a lot of .avxd files.

Tried to merge via instructions here: https://learn.microsoft.com/en-us/archive/technet-wiki/6257.manually-merge-avhd-to-vhd-in-hyper-v Working fine until I tried to merge the final snapshot to .vxd and got "Internal error occurred (0x8007054F)" again.

Now VM won't start at all: Virtual machine failed to generate VHD tree: 'The system cannot find the file specified.'('0x80070002'). It's looking for the oldest snapshot that was merged into its parent (and then into its parent, and so on, up until the one where it failed to merge with the main .vxd file)

I have a 2nd VM that was giving me the "background disk merge failed" error, but I have NOT tried manually merging those .avxd files yet.

Any help?

Thanks!

Answer 1

Hi,

The error message "An internal error occurred" doesn't give much of a clue.

Run services.msc to open Services and restart the Virtual Machine Management Service (VMMS) manually to see if the problem persists. Open Event Viewer and check for related errors in the VMMS log under Applications and Services Logs \ Microsoft \ Windows \ Hyper-V-VMMS.

Backup all the .vhd/.vhdx/.avhd/.avhdx virtual disk files first and create a new VM to see if the same issue happens when merging disk files of that.

Also try System File Checker to repair corrupted system files on your computer. Open CMD as administrator and run

DISM.exe /Online /Cleanup-image /Restorehealth
SFC /scannow

Best Regards,

Ian Xue

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