IOCTL_DISK_GROW_PARTITION - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// ntdddisk.h
// CTL_CODE(0x0007, 0x034, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_DISK_GROW_PARTITION 0x0007C0D0
View the official Windows Driver Kit DDI reference// winioctl.h
// CTL_CODE(0x0007, 0x034, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS)
#define IOCTL_DISK_GROW_PARTITION 0x0007C0D0
View the official Win32 API referenceNo description available.
Increases the size of an existing partition. It is used in conjunction with IOCTL_DISK_UPDATE_DRIVE_SIZE to extend a disk, so that it will contain a new free space area, and then to extend an existing partition on the disk into the newly attached free space. It takes a DISK_GROW_PARTITION structure as the only parameter. For this operation to work, the space after the specified partition must be free. A partition cannot be extended over another existing partition.
The buffer at Irp->AssociatedIrp.SystemBuffer contains the DISK_GROW_PARTITION values - that will be used to increase the size of the partition.
Parameters.DeviceIoControl.InputBufferLength in the I/O stack location of the IRP indicates the size, in bytes, of the buffer made available to the driver, which must be >= sizeof(DISK_GROW_PARTITION). Otherwise, the driver returns with an error status of STATUS_BUFFER_TOO_SMALL.
None.
None.
The Status field is set to STATUS_SUCCESS, or possibly to STATUS_BUFFER_TOO_SMALL, STATUS_INVALID_PARAMETER, STATUS_UNSUCCESSFUL, or STATUS_DRIVER_INTERNAL_ERROR.
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
);
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.
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.