can't boot ubuntu 10.04 and get into to hard disc

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http://askubuntu.com – also posted hear i have exactly the same problem but also i cant boot from any live cd or live usb. Also when removal the hard disc from my laptop (aspire 5600) then boot normally from live cd. i placed the hard disc as external to another pc and showed it up but i cant get into it. i received this message "unable to mount 117 gb filesystem" as a result i cant access into hard disc i don't need archives from hard disc i want just clean the disc and install again ubuntu any ideas ? thank you (HowTos)