I have an old 160gb HD with a dual boot of Win7(C:) and XP (D:) on it, "My Documents" is on a 500gb HD (F:). I have a new 1TB disc. In "My Documents" I have a copy of my Win7 disc installation files as a back-up. I couldn't be bothered to find the disc out so I installed from the hard drive It all went fine until I decided to disconnect my 160gb drive and boot from the 1TB (G:) drive, I got a message saying that there was a missing DLL file. <windows root> \system 32\ HAL dll I think it was.
Is there any way to make it boot from this drive and re-assign it as C:
I want to keep the 160GB drive as an emergency back up in case of problems.