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Docker for WindowsでNo hypervisor is present on this systemが出た時

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Docker for Windowsで、以下のようなコマンド(以下のコマンドはあくまで例です)を打った際に、

Docker run hello-world

以下のようなエラーとなることがあります。

docker: Error response from daemon: container xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxe encountered an error during CreateContainer: failure in a Windows system call: No hypervisor is present on this system

このエラーメッセージの最後の方に「No hypervisor is present on this system」とあるように、Hyper-VがWindows上にない(有効になっていない)ということを伝えています。

これの解決方法として、以下の手順を踏むことで解決します。

  1. BIOSでVirtualization Technologyを有効にする
  2. コントロールパネルの「プログラムと機能」でHyper-Vを有効化する

参考

http://www.atmarkit.co.jp/ait/articles/1806/25/news026.html

以上です。

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