@ex_bubblehead - I have an old software (made by someone), which only runs on XP. The software's launcher is a .bat file. So it won't run on anything but XP. Also having to use an usb to serial adapter cable, which connects the software with a cpu from (big mercedes cars - used for public transportation) which it gathers data and allows me to modify certain parameters of the car.
Anyway, the ideea is i need to dualboot. Having a windows 8.1 and an XP. The problem remaining, is that i get the blue screen, and while trying to use a virtual machine and run the XP, i can't make a connection between the software and the other end of the usb to serial cable. Gonna try and install an XP copy on an usb drive, and try to run it from there.
LATER EDIT: Could use some help with installing an XP copy on an usb drive . Apparently i can't find a good tutorial to do this. Need to install windows xp ON the usb drive not FROM. Thanks!!!!