I have now tested Win10 for a few hours and I don´t like it so far. The most aggravating point is that my 2 other HDDs are not recognized by Win10. They can be found in BIOS and if I boot my old HDD with Win7 system. This means that I have to fallback to my Win7 system in my daily work. There are also a lot of other annoying things. The login window is a mess. I can hardly enter my password. On a lot of places text is overlapping each other. Windows update has disappeared from Control panel an is moved to Settings and it is not clear how to interpret the choices. The layout is miserable.