If a Clone goes wrong then this is your safety net and the means of recovering your drive / system.
ALWAYS make a full disk & partitions backup of the source drive to be cloned BEFORE attempting to clone!.Acronis True Image products allow Cloning to be started from within the Windows Acronis application but this can result in an unbootable system or worse, a total loss of all data including the Windows OS if certain rules are not followed when doing a Clone operation.