IOCTL_DISK_SET_PARTITION_INFO_EX - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers 
// ntdddisk.h

// CTL_CODE(0x0007, 0x013, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_DISK_SET_PARTITION_INFO_EX 0x0007C04C
View the official Windows Driver Kit DDI reference
// winioctl.h

// CTL_CODE(0x0007, 0x013, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_DISK_SET_PARTITION_INFO_EX 0x0007C04C
View the official Win32 API reference

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Windows Driver Kit DDI reference (ni-ntdddisk-ioctl_disk_set_partition_info_ex)

IOCTL_DISK_SET_PARTITION_INFO_EX IOCTL

Description

Changes the partition type of the specified disk partition. (Floppy drivers need not handle this request.)

Parameters

Major code

Input buffer

The buffer at Irp->AssociatedIrp.SystemBuffer contains the SET_PARTITION_INFORMATION_EX to be set.

Input buffer length

Parameters.DeviceIoControl.InputBufferLength in the I/O stack location of the IRP indicates the size, in bytes, of the buffer, which must be >= sizeof(SET_PARTITION_INFORMATION_EX).

Output buffer

None.

Output buffer length

None.

Input/output buffer

Input/output buffer length

Status block

The Information field is set to zero. The Status field can be set to STATUS_SUCCESS, or possibly to STATUS_INVALID_PARAMETER, STATUS_INVALID_DEVICE_REQUEST, STATUS_UNSUCCESSFUL, STATUS_INFO_LENGTH_MISMATCH, STATUS_INSUFFICIENT_RESOURCES, or STATUS_BUFFER_TOO_SMALL.

See also

SET_PARTITION_INFORMATION_EX

View the official Windows Driver Kit DDI reference

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Win32 API reference (ni-winioctl-ioctl_disk_set_partition_info_ex)

IOCTL_DISK_SET_PARTITION_INFO_EX IOCTL

Description

Sets partition information for the specified disk partition, including layout information for AT and EFI (Extensible Firmware Interface) partitions.

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

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

Parameters

Input buffer

Input buffer length

Output buffer

Output buffer length

Input/output buffer

Input/output buffer length

Status block

Irp->IoStatus.Status is set to STATUS_SUCCESS if the request is successful.

Otherwise, Status to the appropriate error condition as a NTSTATUS code.

For more information, see NTSTATUS Values.

Remarks

If the partition is on a disk formatted as type master boot record (MBR), partition size totals are limited. For more information, see the Remarks section of IOCTL_DISK_SET_DRIVE_LAYOUT.

See also

View the official Win32 API reference

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