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Restoring a Snapshot: Revert or Go To?
The Snapshot menu has commands for Go To and Revert. There is also a configuration for making a virtual machine revert automatically at power off. The following topics help you understand differences between Go To and Revert commands:
The Parent Snapshot
To discern between Revert and Go To commands, you must understand what is meant by the parent snapshot.
The parent snapshot is the most recently saved version of your current virtual machine state. If you have just now taken a snapshot, that stored state is the parent of your current virtual machine's active state. If you revert or go to a snapshot, that snapshot becomes the parent of the current virtual machine's active state.
Identifying the Parent Snapshot
The parent snapshot is always the snapshot appearing to the immediate left of the You Are Here icon in the Snapshot Manager.
Note: It is important to understand that the parent snapshot is not always the snapshot you took most recently. For example, imagine that you take a snapshot today and then Go To a snapshot you took yesterday. The snapshot you took today is no longer the parent of the current virtual machine state. The parent snapshot has become the snapshot you took yesterday.
Revert to Snapshot
Revert is essentially a shortcut to Go to the parent snapshot of You Are Here.
This command immediately activates the parent snapshot of the current virtual machine state. The current disk and memory states are discarded, to be restored as they were when you took that snapshot. There are two ways to Revert to the parent snapshot:
Choose Snapshot > Revert to Snapshot
Click Revert on the toolbar.
Go to Snapshot
This command activates a snapshot of your choice. Unlike Revert, the Go To command is not limited to the parent snapshot of the current state. You can choose any snapshot.
There are three ways to Go To a snapshot:
Choose Snapshot > Go to Snapshot. A submenu displays an alphabetical list of the available snapshots for the current virtual machine. The current snapshot is checked.
In the Snapshot Manager, select a snapshot and click Go To.
In the Snapshot Manager, double click a snapshot.
Reverting at Power Off
This configuration setting causes the virtual machine to revert automatically to the parent snapshot any time it is powered off.
1. Select VM > Settings > Options > Snapshots.
2. Under When Powering Off, select Revert to snapshot.
Deleting a Snapshot
You can delete a snapshot any time. Deleting snapshots does not affect other snapshots or the current state of the virtual machine.
To delete a snapshot
1. Go to Snapshot > Snapshot Manager.
2. Select a snapshot you want to delete
3. Click Delete.
A confirmation dialog appears.
4. Click OK.