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Verifying Fedora media SHA1SUM

by opsec — last modified Jan 30, 2008 02:49 AM
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This howto will show you how to verify Fedora media downloaded from an official Fedora mirror.

Applicable to Fedora Versions

  • Fedora Core 7

Requirements

Explanation of requirements.
  1. Previously downloaded official Fedora DVD or RescueCD ISO file(s)
  2. SHA1SUM from an official mirror that matches the ISO architecture.

Doing the Work

Basic description of what will be done and what is expected.

  1. Download the appropriate ISO file(s) that you intend to install with or burn to DVD or CD into the same directory:
    2. example: /home/opsec/fedora_isos/i386 files: F-7-i386-DVD.iso, F-7-i386-rescuecd.iso, SHA1SUM
    issue the following command: sha1sum --check /home/opsec/fedora_isos/i386/SHA1SUM
    should return:
    F-7-i386-DVD.iso: OK
    F-7-i386-rescuecd.iso: OK
  2. Burning the checked ISO to disc:
    3. You can use k3b which is available through the Livna software repository. To enable Livna and install k3b issue the following
    command: rpm -ivh http://rpm.livna.org/ivna-release-7.rpm && yum install k3b k3b-extras-nonfree
    once k3b is opened, go to: Tools --> Burn DVD ISO Image (or CD if you're burning a LiveCD or RescueCD)
  3. The verification process:
    4. The verification process is the same for DVD, RescueCD and LiveCD, however, make sure you get the SHA1SUM file from the same
    directory you downloaded the ISO files from. So, if you're downloading i386 ISOs from: 
    ftp://mirrors.kernel.org/fedora/releases/7/Fedora/i386/iso/
    Make sure you get the SHA1SUM from this directory, not the x86_64 SHA1SUM or vice versa.

Troubleshooting

How to test

Explanation troubleshooting basics and expectations.
  1. Verification fails.
    2. If the sha1sum verification fails more than 2 times you have a corrupted download and you'll need to re-download the ISO(s).
  2. I have a question or problem that isn't answered here:
    3. Please join us on Freenode in #fedora for more assistance. Please be prepared to give us the information we request to help you.

More Information

Any additional information or notes.

Disclaimer

We test this stuff on our own machines, really we do. But you may run into problems, if you do, come to #fedora on irc.freenode.net

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