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# SetDeviceIsAlive

Sets a Boolean value to represent whether the device is alive.

```
kern_return_t SetDeviceIsAlive(bool in_is_alive);
```

## Parameters

`in_is_alive`

`true` if the device is alive; otherwise, `false`.

## Return Value

<doc://com.apple.documentation/documentation/DriverKit/kIOReturnSuccess> on success, or another value if an error occurs. For a list of error codes, see <doc://com.apple.documentation/documentation/DriverKit/error-codes>.

## Discussion

A `true` value means the device is ready and available. `false` means the device is unusable and will most likely go away shortly.

---

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