Installed Vista x86 and have run with that fine. Now installed Vista x64 on another disk not realising that Vista x64 will recognise the first MBR already there and didn't install it. Now I want to remove the original installed x86 Vista and boot from the x64 Vista. Did a repair from Vista disc and typed bootrec /fixmbr and it says command completed successfully but each time I reboot it says missing boot manager. I've made the partition boot, active. Biut the system will not boot without the original disc MBR in. Please help.