Remove the old one and connect the new one to the slot on the motherboard the old one was connected. Then the new one should become disk 0 and since you installed Windows on it, the PC should boot from it.
I have recently bought a new hard drive and now I want to remove the old one and just use the new one.
When I remove the old one, I try to start up the PC with the new only, but it stucks at booting, it says "select proper boot device..."
The old one was a 300 GB, WD SATA 2. And the new one is a Seagate SATA 3 1TB. I want to use the old one with an older PC for somebody else, but if I remove it I can't get into Windows.
Windows 7 is installed in the new HDD. The old one is empty, but I see there is still some "System Reserved" partition there which is being used. Here is how disk management looks like: http://i.imgur.com/Gsbh3dF.png
I want to remove Disk 0 and keep Disk 1 only. I also don't want to lose the data from Disk 1.
Help will be much apreciated. I try to rebuild my old computer for somebody else to use.