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I'm trying to install 12.04 amd64, but none of the options work. When the cd runs, the options to run,install,and check disk for defects give the following error: "/casper/vmlinuz: file not found". I've already checked the iso with md5sum. Any help would be greatly appreciated.

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Hate to ask this, but could you try redownloading? That really seems like a major corruption issue. –  Jacob Johan Edwards Apr 26 '12 at 18:12
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This sounds like a bad burn of the CD –  Jorge Castro Apr 27 '12 at 3:42
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2 Answers 2

Your right guys it was a bad burn. I made around 5 copies before, and all were bad. When i tried a different burner it worked. Thanks.

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Simply delete the .efi extension. Worked for me!

http://choorucode.com/2013/03/17/caspervmlinuz-file-not-found-error-on-ubuntu-desktop-12-04-2-lts-installation/

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How should I delete the .efi extension? I have the same problem, but it's on a live CD... no way to edit the contents.... –  Bertvan Sep 27 '13 at 18:38
    
sorry, it's been a while since i did this... i believe i used a live USB rather than a CD for this very reason. perhaps it's possible to remove the .efi before you burn? –  Ryan Sep 27 '13 at 19:37
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