i guess it was just a wrong compiler directive.
Would you mind to run this binary to verify before i'll edit post #1, would be great, thank you!
(Compiled with Delphi 7, uncompressed .exe inside attachment, may reqiure admin-rights to get drive info)
I found the Error, it was my own fault, in .exe upload i left two lines active for debugging purposes that should be turned off for final .exe.
Source was correct, binary was wrong, my fault sorry!
Remove File to Post #1