Manufacturer's disks are typically proprietary and won't work on just any computer system, it is a sort of "GOTCHA" but you never know, you may come across an ACER one of these days the disk(s) might work on. As far as the XP pro is concerned, there could be license constraints but I'd take a shot with that one anyway, you should at least be able to load it so long as the disk will read, and worry, or not, about technicalities later.