---
title: firstTrackNumberInLastSessionLSB
framework: Kernel
role: symbol
role_heading: Instance Property
platforms: [macOS 10.5+]
path: kernel/bddiscinfo/1580844-firsttracknumberinlastsessionlsb
---

# firstTrackNumberInLastSessionLSB

## Declaration

```occ
UInt8 firstTrackNumberInLastSessionLSB;
```