<!--
{
  "availability" : [
    "macOS: 11.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "Virtualization",
  "identifier" : "/documentation/Virtualization/VZVirtualMachine/start()",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Method",
  "symbol" : {
    "kind" : "Instance Method",
    "modules" : [
      "Virtualization"
    ],
    "preciseIdentifier" : "c:objc(cs)VZVirtualMachine(im)startWithCompletionHandler:"
  },
  "title" : "start()"
}
-->

# start()

Starts the VM and notifies the specified completion handler if startup was successful.

```
func start() async throws
```

## Discussion

Call this method to start a VM that’s in the [`VZVirtualMachine.State.stopped`](/documentation/Virtualization/VZVirtualMachine/State-swift.enum/stopped) or [`VZVirtualMachine.State.error`](/documentation/Virtualization/VZVirtualMachine/State-swift.enum/error) state.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)