Restoring a VM that was backed up with a Hyper-V Intelligent Policy and that has a pass-through disk
If a Hyper-V VM with a pass-through disk was backed up with a Hyper-V intelligent policy (Query Builder), the restored VM may not start. The following message appears:
An error occurred while attempting to start the selected virtual machine(s).
The message includes the name of the VM, its virtual machine ID, and related details.
Note:
Although the VM does not start, the VM data (including the pass-through disk) is successfully restored.
To start a VM that is in a Hyper-V cluster:
- In the Failover Cluster Manager, under Actions click Configure Role….
- In the Select Role screen, select Virtual Machine as the role.
- In the Select Virtual Machine screen, select the VM to configure for high availability.
Note:
The VM was restored to a state of non high-availability.
When the restored virtual machine is set to high availability, it should start normally.
- Right-click on the VM and click Start.
To start a VM that is not in a Hyper-V cluster:
- In the Hyper-V Manager, right-click the VM and click Settings.
- Select the pass-through drive's IDE Controller (for Generation 1 VM) or the SCSI Controller (for Generation 2 VM).
The pass-through disk appears under the controller, as Hard Drive Physical drive Disk x.
For example:
- In the right panel under Physical hard disk, click Remove.
- Click Apply to commit the change.
- Reselect the pass-through drive's IDE Controller or SCSI Controller.
- Select Hard Drive and click Add.
Beneath the IDE Controller or SCSI Controller appears Hard Drive <file>. The default selection in the Media panel on the right is Virtual hard disk.
- To add the pass-through disk, click Physical hard disk.
- Click Apply and then click OK.
- Right-click on the virtual machine and click Start.
The virtual machine should start normally.
