How to Install Windows XP from USB
Download and launch the YUMI - Multiboot USB Boot Creator.
(1) Select your USB Drive Letter from the list.
(2) Select Windows XP Installer towards the bottom of the distribution list.
(3) Browse to and select the ISO you created earlier.
(4) Click Create.
Once the process is complete, you should end up with your very own Windows XP Bootable USB Installer. Enabling you to completely Install Windows from a Flash Drive.