Can I pull a single Win XP Pro SP3 drive put of a PC. Hardware clone the drive (external SATA disk duplicator). Then pop both drives back into the same PC- and automatically be presented with the choices expected for a working dual boot system?
Or would there some sort of C: drive Volume ID problem or conflict that would not self-resolve?
You might not get a dual/mutliboot menu presented from the boot loader, but you may be able to use your bios's boot device option at startup. Some boards show a F12-Boot device or something similar on screen just before loading windows. This isn't a true multiboot if that's what you want to call it, but I don't see why that wouldn't work. It's basically the same as going into the bios and changing your boot device.