Ok, so the first thing I had is this: "setup was unable to create a new system partition or locate an existing system partition" and its the main problem. Atm I have: 1x 200GB Sata hdd (3 partitions: 90gb WindowsXP, 100GB for stuff, 10GB for backup) 1x 500GB Sata hdd - this is a new HDD, nothing on it yet. (I want it split 150(windows 7)/350(otherstuff) First tryed to install while had boath HDD - got this error. Started searching google, most time the answer was: remove other hdd. But It doenst help to me... Still getting same error when I have only 500GB HDD inserted. Tryed to delete boath partitions in windowsXP, and then creat new one. Tryed to delete boath in windows7 installation, create new one, and its still the same error! Something new came, when I had only 500gb hdd connected, I formated the partition via Windows7 installation, then exited installation and started again. Clicking on the partition I want to install, it Already told that, Windows cannot install there, because "windows 7 This hard disk space is formatted with in an unsupported version of the NTFS file system" How can it be an unsupported format, when its formated via the install? Anyone can other suggestions how I could get this working ?