---
title: kIOReturnNotReadable
framework: IOKit
role: symbol
role_heading: Global Variable
platforms: [Mac Catalyst 13.0+, macOS 10.9+, xcode 8.0+]
path: iokit/kioreturnnotreadable
---

# kIOReturnNotReadable

## Declaration

```swift
var kIOReturnNotReadable: IOReturn { get }
```