---
title: lastRZoneNumberInLastBorderMSB
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 13.0+, macOS 10.2+]
path: iokit/dvddiscinfo/1394012-lastrzonenumberinlastbordermsb
---

# lastRZoneNumberInLastBorderMSB

## Declaration

```occ
UInt8 lastRZoneNumberInLastBorderMSB;
```