---
title: kIOUserStorageOptionNone
framework: BlockStorageDeviceDriverKit
role: symbol
role_heading: Macro
platforms: [driverkit 21.0+]
path: blockstoragedevicedriverkit/kiouserstorageoptionnone
---

# kIOUserStorageOptionNone

A value that defines no options.

## Declaration

```occ
#define kIOUserStorageOptionNone
```

## Discussion

Discussion This value equals 0x0000.

## See Also

### Storage Options

- [kIOUserStorageOptionForceUnitAccess](blockstoragedevicedriverkit/kiouserstorageoptionforceunitaccess.md)