Can't install ubuntu onto brand new hard drive

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http://askubuntu.com – I recently replaced the hard drive of my Samsung n102 netbook with a brand new hard drive. I can't get the computer to read the ubuntu 12.10 install disc at all. It says "OS not found" despite me having changed the BIOS boot order to read the CD/DVD reader I've connected by USB first. What should I do do you think? Any help would be much appreciated. (HowTos)