RHEL 8.2 Fails to Boot

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I have a task to upgrade from RHEL 7.2 to RHEL 8.2 without going through the approved Red Hat migration path. Our program is running in a VMware environment using UEFI on HP servers.

Our method is to "clone" the rootlv, usrlv, optlv, and varlv LVs from a base RHEL 8.2 image and share /boot and /boot/efi. This has been used successfully when upgrading from different RHEL 7 releases.

There is now a problem when booting the RHEL 8.2 image and the UEFI partition does not get mounted nor can it be mounted because the driver is not installed. I've tried the comment out /boot/efi entry in /etc/fstab and manually install vfat but have had no success.

The GRUB menu looks good and so does the default RHEL 8.2 menu entry.

Has anyone encountered this problem before? And if so, how did you work around the issue?

Combined RHEL 7/RHEL 8 GRUB

GRUB Default Entry

UEFI Error

JE

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