Can someone advise please/ I have 5 hard drives in my system and I have installed windows 7 x64 on 2 separate drives and done this within windows. However a few times it booted okay but then started hanging on the post where it states verifying DMI pool data. Subsequently I tried everything to repair as I thought that the MBR was probably corrupted. I have installed windows separately now on each drive by disconnecting all drives except the one that I am installing and then shut that down, disconnected it and connected the next and installed a fresh copy there to. I am concerned that windows will corrupt the MBR again when I connect the drives one by one. I am not overly optimistic about windows boot manager and its reliability. Any ideas someone please?