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ブートホールの脆弱性パッチ (shim 更新) の適用後、古いカーネルを起動できない

Solution Verified - Updated -

Issue

  • shim および grub2 パッケージの更新後に古いカーネルを起動できず、エラーメッセージ you need to load the kernel first. が表示されます。
error: ../../grub-core/loader/i386/efi/linux.c:215:(hd0,gpt2)/vmlinuz-4.18.0-193.el8.x86_64 has invalid signature.
error: ../../grub-core/loader/i386/efi/linux.c:94:you need to load the kernel first.

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Environment

  • Red Hat Enterprise Linux (RHEL) 7 および 8
  • kernel 4.18.0-193.14.3.el8_2.x86_64 (on RHEL8)
  • shim-x64-15-15.el8_2.x86_64 (on RHEL8)
  • Windows Server 2016 - 10.0.14393 Operating System Patchlevel 3808

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