---
title: doAsyncReadCD
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/iocdblockstoragedevice/1578555-doasyncreadcd
---

# doAsyncReadCD

## Declaration

```occ
virtual IOReturn doAsyncReadCD(IOMemoryDescriptor *buffer, UInt32 block, UInt32 nblks, CDSectorArea sectorArea, CDSectorType sectorType, IOStorageCompletion completion);
```