For instructions, see How to convert from CentOS Linux or Oracle Linux to RHEL. If you are using CentOS Linux 6 or Oracle Linux 6, you can convert your operating system to RHEL 6 using the unsupported Convert2RHEL utility prior to upgrading to RHEL 7. 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. Deprecated Functionality"Ĭollapse section "9. Red Hat Enterprise Linux System RolesĮxpand section "9. Important Changes to External Kernel Parameters"Ĭollapse section "7. Important Changes to External Kernel Parameters"Ĭollapse section "4. Important Changes to External Kernel ParametersĮxpand section "4.
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