how to get my saved data from my persistant live USB

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http://askubuntu.com – I've been using a live USB (ubuntu 12.04) for a long time and as my primary OS. i have a lot of saved data on the USB. now i encountered this problem kernel panic - not syncing : attempted to kill init! and i don't think it is repairable and the best option would be to just copy the important data and re-install the ubuntu on USB. but the crux is that when i plug the USB in a machine (running Windows i don't think that matters) i am not able to find my saved files that i want to save. how do i get the saved files? (HowTos)