Now I am as confused as davehc. What does your old hardware have to do with you wanting to format the SSD?
If you want to use it for your XP install, I do not think that will work as XP or an older hardware (especially mainboards) won't work with it. I have an old PC ( >15 years) that I wanted to "convert" to SSD. It will not even recognize that there is a SSD connected.
On another note: a 2TB for Windows XP, if that is what you are trying to do, seems to me like overkill, no offense...
unless I miss understood something here, hence my confusion...