E: Command line option --allow-downgrades is not understood

    • OMV 4.x
    • Upgrade 3.x -> 4.x

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    • This is an indication that your system is still on Debian 8. If you want to upgrade from OMV3 to OMV4 the mentioned link is the wrong approach. This forum post is how to install OMV on a pre-installed Debian 9 system. Simply use 'omv-release-upgrade' to upgrade the system.
      Absolutely no support through PM!

      I must not fear.
      Fear is the mind-killer.
      Fear is the little-death that brings total obliteration.
      I will face my fear.
      I will permit it to pass over me and through me.
      And when it has gone past I will turn the inner eye to see its path.
      Where the fear has gone there will be nothing.
      Only I will remain.

      Litany against fear by Bene Gesserit