Here is my problem, I have a 300gb hdd which i installed windows 7 64bit and other two hdd's as a storage and if i plug 300gb hdd only, windows wont boot, saying ''Bootmgr is missing'' i have to plug the other two and chose one of them as the first boot device and plug them exaclty the same way in order to load windows.Shouldn't i choose the 300gb hdd as a first boot device to get it started? and then i checked my disk management to see which one is for boot it shows 300gb one.I tryed to find a solution and nothing yet i just cant boot with 1 hdd.Sorry for my english its not my native language i hope thats enough though