---
title: kRBCCmd_START_STOP_UNIT
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [driverkit 22.0+, macOS 10.12+]
path: kernel/1643408-anonymous/krbccmd_start_stop_unit
---

# kRBCCmd_START_STOP_UNIT

## Declaration

```occ
kRBCCmd_START_STOP_UNIT = 0x1B
```