Now i changed my head parkings. Again thanks to doktor.notor and no thanks to WD-support.
To save time for others i share my steps.
1.Download from freedos.org (fdfullcd.iso (153MB))
Then i used burner program k3b.
Then find an cdrw disk, in my case an old cdrw with "RedHat 7.1" (will not touch tah again)
2.burn the file as cd-iso,select (multisession).
3.then burn datacd, put wdidle3.exe on same disk (multisession)
Then connect your drive/s to whatever hardware that suites your needs, and boot from the cd. ( I have a pc with cdrom/dvdrom and sata connectors )
When in freedos. Change drive to X: and run the wdidle3.exe with your parameters and your done.
Anyone remember how to use dos/msucks? Anyway you simply type "X:" to get there....
Hope this helps other, if my guidance seem messy, blame, bag in box....