---
title: kMMCCmd_READ_HEADER
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [driverkit 22.0+, macOS 10.12+]
path: kernel/1643411-anonymous/kmmccmd_read_header
---

# kMMCCmd_READ_HEADER

## Declaration

```occ
kMMCCmd_READ_HEADER = 0x44
```