IOCTL_STORAGE_GET_DEVICE_NUMBER IOCTL (winioctl.h)
Retrieves the device type, device number, and, for a partitionable device, the partition number of a device.
To perform this operation, call the DeviceIoControl function with the following parameters.
BOOL DeviceIoControl( (HANDLE) hDevice, // handle to device IOCTL_STORAGE_GET_DEVICE_NUMBER, // dwIoControlCode NULL, // lpInBuffer 0, // nInBufferSize (LPVOID), lpOutBuffer, // output buffer (DWORD), nOutBufferSize, // size of output buffer (LPDWORD) lpBytesReturned, // number of bytes returned (LPOVERLAPPED) lpOverlapped // OVERLAPPED structure );
The values in the STORAGE_DEVICE_NUMBER structure are guaranteed to remain unchanged until the device is removed or the system is restarted. It is not guaranteed to be persistent across device restarts or system restarts.
|Minimum supported client||Windows XP|
|Minimum supported server||Windows Server 2003|
|Header||winioctl.h (include Windows.h)|