RE: "SLP copies don't get activated because they are OEM/SLP. Are you saying you installed XP Home yourself on a machine that did NOT have XP Home before?" Now that you mention it, I can't swear to the fact that I was required to go through the activation process. It was a new laptop with XP installed. Guess I'll just try to install the operating system on the second drive and see what happens. I've read up on what SLP software is and I'm beginning to get the picture. Is there some freeware with which I can easily make my usb external 2.5" drive a clone of my internal drive? I have tried Norton Ghost but ran into problems,the nature of which I can't recall exactly, but may have appeared when I put the clone in and the laptop became confused. I realise I'm not being very helpful in providing detials, but it has been a while.