Note that the Preupgrade Assistant and the Red Hat Upgrade Tool are available in the RHEL 6 Extras repository. Significant differences between the two major releases are documented in the Migration Planning Guide. The procedure of an in-place upgrade from RHEL 6 to RHEL 7 and the usage of the Preupgrade Assistant and the Red Hat Upgrade Tool is documented in the Upgrading from RHEL 6 to RHEL 7 guide. You can use custom repositories for an in-place upgrade The rollback functionality is available also for UEFI In-place upgrade of UEFI-based RHEL installations is now supported The supported in-place upgrade path is from RHEL 6.10 to RHEL 7.9, with the exception of SAP HANA. Important Changes to External Kernel Parameters
