Hello, I currently have a hard drive that came with my dell vostro 200. The OS windows vista is installed onto that and the hard drive has not been modified at all. i want to use this hard drive in my new build. What exactly do I have to do to it for this to work? Can i just hook it up to the new motherboard and components and everything will work just as it did before except with new hardware or do I have to do some formatting? I am very new to this as you can tell. any help is appreciated. thank you.
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Nope you will have to do a brand new install, there are MOBO specific attributes that get written to your Windows install.
You need to format it and install a new OS. Your old dell OS will not work.