---
title: READ_DISC_STRUCTURE
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/ioscsimultimediacommandsdevice/1576170-read_disc_structure
---

# READ_DISC_STRUCTURE

## Declaration

```occ
bool READ_DISC_STRUCTURE(SCSITaskIdentifier request, IOMemoryDescriptor *dataBuffer, SCSICmdField4Bit MEDIA_TYPE, SCSICmdField4Byte ADDRESS, SCSICmdField1Byte LAYER_NUMBER, SCSICmdField1Byte FORMAT, SCSICmdField2Byte ALLOCATION_LENGTH, SCSICmdField2Bit AGID, SCSICmdField1Byte CONTROL);
```