I have installed the first install disc not the secound play disk. game goes fine untill i turn xbox off and come back to play again i have to reinstall on usb each time?
What kind of USB are you using?
There are common issues that people come across with certain USB drives that aren't fully supported/recommended for use on the 360 and loss of stored data is the common problem.
Check out the USB trouble shooting thread from forum 4
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