---
title: READ_CD
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/ioscsimultimediacommandsdevice/1576346-read_cd
---

# READ_CD

## Declaration

```occ
virtual bool READ_CD(SCSITaskIdentifier request, IOMemoryDescriptor *dataBuffer, SCSICmdField3Bit EXPECTED_SECTOR_TYPE, SCSICmdField1Bit RELADR, SCSICmdField4Byte STARTING_LOGICAL_BLOCK_ADDRESS, SCSICmdField3Byte TRANSFER_LENGTH, SCSICmdField1Bit SYNC, SCSICmdField2Bit HEADER_CODES, SCSICmdField1Bit USER_DATA, SCSICmdField1Bit EDC_ECC, SCSICmdField2Bit ERROR_FIELD, SCSICmdField3Bit SUBCHANNEL_SELECTION_BITS, SCSICmdField1Byte CONTROL);
```