---
title: "deactivate(options:replyHandler:)"
framework: fskit
role: symbol
role_heading: Instance Method
path: "fskit/fsvolume/operations/deactivate(options:replyhandler:)"
---

# deactivate(options:replyHandler:)

Tears down a previously initialized volume instance.

## Declaration

```swift
func deactivate(options: FSDeactivateOptions = [], replyHandler reply: @escaping @Sendable ((any Error)?) -> Void)
```

```swift
func deactivate(options: FSDeactivateOptions = []) async throws
```

## Parameters

- `options`: Options to apply to the deactivation.
- `reply`: A block or closure to indicate success or failure. If activation fails, pass an error as the one parameter to the reply handler. If activation succeeds, pass nil. For an async Swift implementation, there’s no reply handler; simply throw an error or return normally.

## Discussion

Discussion Set up your implementation to release any resources allocated for the volume instance. By the time you receive this callback, FSKit has already performed a reclaim call to release all other file nodes associated with this file system instance. Avoid performing any I/O in this method. Prior to calling this method, FSKit has already issued a sync call to perform any cleanup-related I/O. FSKit unmounts any mounted volume with a call to unmount(replyHandler:) prior to the deactivate callback.