IOCTL_DISK_GROW_PARTITION IOCTL (winioctl.h)

Enlarges the specified partition.

To perform this operation, call the DeviceIoControl function with the following parameters.

BOOL DeviceIoControl(
 (HANDLE) hDevice, // handle to device
 IOCTL_DISK_GROW_PARTITION, // dwIoControlCode
 (LPVOID) lpInBuffer, // input buffer
 (DWORD) nInBufferSize, // size of the input buffer
 NULL, // lpOutBuffer
 0, // nOutBufferSize 
 (LPDWORD) lpBytesReturned, // number of bytes returned
 (LPOVERLAPPED) lpOverlapped // OVERLAPPED structure
);

Remarks

You can extend or shrink a live partition, and the partition can be open for sharing during the extend or shrink operation.

You do not need to lock a partition that you are extending, nor do you need to shut down other applications or services during the extend operation.

For more information, see DISK_GROW_PARTITION.

Requirements

See also

• DISK_GROW_PARTITION
• DeviceIoControl
• Disk Management Control Codes