Why does preupg result block redhat-upgrade-tool procedure for Upgrading Red Hat Enterprise Linux 6 to 7 on UEFI enabled systems?

Solution Verified - Updated -

Issue

  • While upgrading Red Hat Enterprise Linux 6.9 to 7.x (in-place upgrade), the preupg result show up the following error which looks HIGH IMPACT 
UEFI boot loader
Rule ID           xccdf_preupg_rule_system_uefi_check
Result            fail
Time              xxxxxxxxxxxxxxxxxxx
Severity

Identifiers and References

Description
The module checks for EFI and it forbids an in-place upgrade when the EFI boot loader is present. 
Logs
preupg.risk.EXTREME: The EFI boot loader was detected. An in-place upgrade is not possible.
Remediation description:
Systems using the EFI boot loader cannot be in-place upgraded now.
  • Is it possible to overcome this and force upgrade the system?

Environment

  • Red Hat Enterprise Linux 6.x on UEFI enabled system.
  • redhat-upgrade-tool
  • preupgrade-assistant

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