need help to recover data

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http://askubuntu.com – ubuntu 10.04.4 LTS after power outage system hangs on boot at checking battery state ===>ok I could do with knowing if ] putting a setup disc in & reinstalling will wipe the data off or not. anyone has a fix for this problem so that I can get back to the data. anyone knows a way of getting the data off onto a temp win disc. Thanks in advance for looking at this post. (HowTos)