---
title: RegisterDext
framework: BlockStorageDeviceDriverKit
role: symbol
role_heading: Instance Method
platforms: [driverkit 21.0+]
path: blockstoragedevicedriverkit/iouserblockstoragedevice/registerdext
---

# RegisterDext

## Declaration

```occ
virtual kern_return_t RegisterDext();
```

## See Also

### Instance Methods

- [DoAsyncUnmapPriv](blockstoragedevicedriverkit/iouserblockstoragedevice/doasyncunmappriv.md)