Hi I have a problem with booting on Windows 7 disk/MBR, I hope very much i can get some Professional help with this. I have 2 separate physical hard drives. On HD1 I have Windows Vista installed, I then decided to shift to Windows 7 so I installed it as a separate operating system on my second hard drive HD2. It made a boot list where I could choose to boot from Vista or 7, this worked fine. But now I want to get rid of the Vista installation and reuse the hard disk in a nas box after I copied all the data from Vista a need to save. Problem is when I remove the HD1(Vista) the computer cant boot on HD2, it says that its not possible to boot from HD2. I suspect that the MBR that is used for booting was located on HD1(Vista). How can I make it boot on the HD2 without HD1 present, can I create a new mbr on that drive? I tried with the Windows 7 installation disc but no luck. Please explain how I can do this and what commands I should use , I don't normally do this. and it seems changes has been made in windows 7, it seems it has no boot.ini that I can edit in directly. Thankx a bunch.