Having multiple bootable hard drives without having message on startup

[rubixryan]

I am looking to have to Windows 7 installations on two separate hard drives that can both be booted from but I want the second installation to be sort of hidden.
By this I mean I don't want to interrupt other users when they turn the computer with a message asking to choose an operating system.

The second installation was an image of an old hard drive but every time I try and boot from it I get a Boot Error. I am assuming that this has to do with either the BCD or MBR.

Does anyone have any ideas on how I could do this?

Thanks in advance!

 

[rubixryan]

Mynight I am as I don't have a computer for the other hard drive I am looking to have it on one computer along with its current operating system.

bledd. What tool would you suggest, I tried using Easy BCD to add it but I still got a "boot error".

Sorry for the late reply, I went to a live show at my local theater!