I replaced the HD in my HP desktop about two years ago. I bought a fresh copy of XP Home for the purpose. As I was installing, I noticed that I had left an External USB HD plugged in. It happened to be the largest drive available so Windows named it C. Windows asked me if I wanted to install the OS on that drive. No, of course not. I chose the Local Disk, named H, and finished the install.
Everything has worked fine for all this time, yet I feel it is time to reinstall XP. While installing, I will remember to unplug the USB Drive so the Local Disk will be named C. Is this going to cause any trouble during Validation? I want to be ready for any possible trouble.