IOCTL_DISK_GET_PARTITION_INFO

Operation

Returns information about the type, size, and nature of a disk partition. (Floppy drivers need not handle this request.)

Input

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

Output

The driver returns the PARTITION_INFORMATION data in the buffer at Irp->AssociatedIrp.SystemBuffer.

I/O Status Block

The Information field is set to the size in bytes of the returned data. The Status field can be set to STATUS_SUCCESS, or possibly to STATUS_INVALID_PARAMETER, STATUS_INFO_LENGTH_MISMATCH, STATUS_INSUFFICIENT_RESOURCES, STATUS_INVALID_DEVICE_REQUEST, or STATUS_BUFFER_TOO_SMALL.

Headers

Defined in ntdddisk.h. Include ntdddisk.h.

See Also

PARTITION_INFORMATION