Moved a AVHD File to create more space now my Virtual Server wont start

Posted on 2011-09-02
Last Modified: 2012-05-12
I was running out of room on my 2008 r2 Server that runs Hyperv with 2 Servers on it and I decided to move one of the AVHD Files onto a USB drive to get more hard disk space, now Virtual machine wont start without an error that mentions there is a missing AVHD file.

Can someone help.
Question by:NWCCSteve
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LVL 42

Expert Comment

ID: 36476783
You need the AVHD file. Move it back. I suggest you make sure that you can boot the VM and then look at deleting all snapshots. Snapshots should not be used in production. Shut down and temporarily move the VHD of the other VM to free up space for deleting the snapshots if necessary.

Author Comment

ID: 36476809
I did move the AVHD back but it looks like it has different security permissions or something as the Virtual machine wont boot.

Author Comment

ID: 36476814
When I look at the AVHD file I moved back it has a little padlock on it, when I check the permissions and compare it with the other avhds below it, it doesnt have any permissions for the "Virtual Machine" group nor another unusaully long named group.

Can I salvage this virtual machine as I really need it deparately
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LVL 42

Accepted Solution

kevinhsieh earned 500 total points
ID: 36477190
You will need to manually apply at least the same permissions on the file as are on the other files. You can add EVERYONE in a pinch.

Author Closing Comment

ID: 36477203
Thanks Kevin

I sorted it out a few minutes before seeing your post, but not after 3 hours worth of research first as I didnt want to risk losing anything.

I did exactly as you mentioned gave the AVHD file "Everyone" Full Access and then the machine started.
LVL 42

Expert Comment

ID: 36477211
Great. Now you need to get rid of your snapshot(s). You know those keep growing forever, right? That's why they're not recommended for any length of time.

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