---
title: ReadDiscStructure
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/ioscsimultimediacommandsdevice/1576273-readdiscstructure
---

# ReadDiscStructure

## Declaration

```occ
virtual IOReturn ReadDiscStructure(IOMemoryDescriptor *buffer, const UInt32 length, const UInt8 structureFormat, const UInt32 logicalBlockAddress, const UInt8 layer, const UInt8 agid, const UInt8 mediaType);
```