---
title: UNMAP
framework: kernel
role: symbol
role_heading: Instance Method
path: kernel/ioscsiblockcommandsdevice/1792152-unmap
---

# UNMAP

## Declaration

```occ
bool UNMAP(SCSITaskIdentifier request, IOMemoryDescriptor *dataBuffer, SCSICmdField1Bit ANCHOR, SCSICmdField6Bit GROUP_NUMBER, SCSICmdField2Byte PARAMETER_LIST_LENGTH, SCSICmdField1Byte CONTROL);
```