How to install grub2 on gpt partition

Solution Verified - Updated -

Issue

  • The system failed to boot with the RHEL-Upgrade-Initramfs entry after initiating a Leapp-based upgrade from RHEL 7.9 to RHEL 8.8.

Environment

  • Red Hat Enterprise Linux 7.9, upgraded in-place from RHEL 6.10.

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