Hi! I'm, trying to get the this API PARTITION_INFORMATION_EX running in a dllcall. Thought I could use it the same way like in this topic Get disk number from drive letter but i guess it doesn't work so Please can anyone help me with this? Local $aCall = DllCall("kernel32.dll", "dword", "GetLogicalDrives") Local $iMask = $aCall[0] Local $tIOCTL_DISK_GET_PARTITION_INFO_EX = DllStructCreate("long_ptr StartingOffset;" & _ "long_ptr PartitionLength;" & _ "ulong Partitio