Hi! Windows 10, Python 3.6.
I want to get the serial number of the drives (without external modules like Win32 or WMI). It is needed for identification of removable devices (like USB external drives). Somewhere I saw this code: def GetVolumeID(Drive): import ctypes kernel32 = ctypes.windll.kernel32 volumeNameBuffer = ctypes.create_unicode_buffer(1024) fileSystemNameBuffer = ctypes.create_unicode_buffer(1024) serial_number = None max_component_length = None file_system_flags = None rc = kernel32.GetVolumeInformationW( ctypes.c_wchar_p(Drive), volumeNameBuffer, ctypes.sizeof(volumeNameBuffer), serial_number, max_component_length, file_system_flags, fileSystemNameBuffer, ctypes.sizeof(fileSystemNameBuffer) ) return serial_number; print(GetVolumeID('c:\\')) This function is working with other values (volumeNameBuffer), but for serial it returns None. The serial number is empty. How to I pass this parameter to I get the value? The doc said it's LPDWORD (pointer to DWORD): https://msdn.microsoft.com/en-us/library/windows/desktop/aa364993(v=vs.85).aspx _Out_opt_ LPDWORD lpVolumeSerialNumber, Thank you for any advance in this theme! Best wishes dd -- https://mail.python.org/mailman/listinfo/python-list