You cant just transfer them. Did you install over XP? Did you partition your drive and then install XP?
If you installed voer XP you cant get them back. If you partitioned your drive but lost your XP install put in your XP CD and go tot he recovery console. From there type in fixboot and fixmbr to get XP back.
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Phone: LG Optimus G Pro
Running: Stock JB from LG with Nova Launcher