---
title: prepareRequest
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/iocdblockstoragedriver/1572068-preparerequest
---

# prepareRequest

## Declaration

```occ
virtual void prepareRequest(UInt64 byteStart, IOMemoryDescriptor *buffer, CDSectorArea sectorArea, CDSectorType sectorType, IOStorageAttributes *attributes, IOStorageCompletion *completion);
```