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Thread: Corrupt Ubuntu Server ISO even after downloading twice

  1. #1
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    Corrupt Ubuntu Server ISO even after downloading twice

    I've twice downloaded ubuntu-12.04.4-server-amd64.iso from the Ubuntu site, and when I'm somewhere through the installation, I get the message in the screenshot below. How do I get past this? The image cannot be corrupted twice. What am I doing wrong? Or are the iso images themselves corrupt?
    I'm doing all this on a Dell Laptop with 4GB RAM running Windows 7 Home Premium 64. I'm using Oracle VirtualBox.


    When I run check cd-rom, I get this:


  2. #2
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    Re: Corrupt Ubuntu Server ISO even after downloading twice

    1. Did you check with md5sum, that the download was correct? See this link https://help.ubuntu.com/community/UbuntuHashes

    2. Did you burn the iso file to a CD or DVD or did you flash it to a USB pendrive?

    *. You can try torrent instead of regular downloading. Then the md5sum should be checked as part of the process.

  3. #3
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    Re: Corrupt Ubuntu Server ISO even after downloading twice

    The ISO is saved to a drive on my PC. I did not burn it to a CD or DVD.

  4. #4
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    Re: Corrupt Ubuntu Server ISO even after downloading twice

    OK.

    1. I suggest that you check the md5sum with the command

    Code:
    md5sum filename.iso               # using the actual filename of your iso file
    2. How did you run the computer to get the screenshots in post #1? Did you boot from CD, DVD or USB?

    Edit: or did you boot from the iso file (when it is sitting on your hard disk drive)?

  5. #5
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    Re: Corrupt Ubuntu Server ISO even after downloading twice

    The MD5 Sum do not match. I wonder how this happened. Does this mean I need to re-download the file? I was reading a few posts that said Windows Changed the file extentions. Could this be the problem?

  6. #6
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    Re: Corrupt Ubuntu Server ISO even after downloading twice

    That's Oracle Virtual Machine in the Screenshots. I'm doing this using Oracle VM.

  7. #7
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    Re: Corrupt Ubuntu Server ISO even after downloading twice

    try downloading via torrent as it does extra checking to verify file integrity

  8. #8
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    Re: Corrupt Ubuntu Server ISO even after downloading twice

    You need to get an iso file, that matches with the md5sum. If the internet connection is flaky (somewhere, maybe far from your house), it is better to use torrent. Scroll to the chapter about BitTorrent in this link

    http://www.ubuntu.com/download/alternative-downloads

  9. #9
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    Re: Corrupt Ubuntu Server ISO even after downloading twice

    Quote Originally Posted by kristian3 View Post
    that's oracle virtual machine in the screenshots. I'm doing this using oracle vm.
    ok

  10. #10
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    Re: Corrupt Ubuntu Server ISO even after downloading twice

    One of the things I noticed, is that files in the ISO all have extensions .deb, where as the file in md5sum.txt all have the extensions .udeb

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