Thanx Proxima Centauri but I was so unpatient that I decided to remove Windows instalation before You were kind to post me back
and now I've noticed that after shut down computer didnt turned off...
... may it be fault of some reintallation bug or what?
After work I will see if it repeats because till now I didnt have time
Back to my question about MBR and GRUB, could you interpretate for me the task of sequence of instalation of Linux and Windows?
As I heard, you can install Linux when you've already got Windows but inversely - first Linux, than Windows - is not proper.