---
title: copyPhysicalExtent
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/iofilterscheme/1564815-copyphysicalextent
---

# copyPhysicalExtent

## Declaration

```occ
virtual IOStorage * copyPhysicalExtent(IOService *client, UInt64 *byteStart, UInt64 *byteCount);
```