Problem with Hyper-V snapshots – unable to start VM

10 pts.
Tags:
Hyper-V
Windows 2008 R2
I restarted my Host server after shutting down three guest VMs. After I restarted the machine I tried to start the VMs and got an error stating the the VM failed to start. SERVERNAME failed to start. Attachment 'avhd file path' is read only. Please provide read/write access to the attachment. Error: 'General access denied error' SERVENAME failed to start. (virtual machine ID 17292200-wd22-dd22-d23-dddddd2222) The issue seems to be with the disk space. The VHD file for this VM is 128 GB and there are two AVHD files of 58 and 75 GB. Whereas the total disk space on this drive (E) is 280 GB - the free space is only around 23 GB. I understand that the error is caused by the unavailability of the required disk space. Unfortunately, I cannot increase the disk space on this drive. However I have another drive (D) that has 400 GB of free space. I exported this VM to D drive and then tried to add the copied AVHD files but it gives me a similar error. Any help is appreciated.

Software/Hardware used:
Windows 2008 R2, Hyper-V

Answer Wiki

Thanks. We'll let you know when a new response is added.

Perhaps the VHD image file you are trying to use is set to read only. To fix this right-click the file > properties, and un-tick the Read-only box.

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