---
title: refCon
framework: kernel
role: pseudoSymbol
path: kernel/ioatacommand/refcon
---

# refCon

for use by disk drivers, clients of IOATADevice only. IOATADevice and IOATAControllers shall not use this field in any manner.

## Declaration

```occ
void* refCon;
```

## Overview

Overview

## See Also

### Instance Variables

- [refCon2](kernel/ioatacommand/refcon2.md)
- [fExpansionData](kernel/ioatacommand/fexpansiondata.md)