In Fedora Linux 43 on x86 architecture systems, only the use of GPT (GUID Partition Table) is planned to be supported in all Fedora installations utilizing UEFI. This change has not yet been reviewed by the FESCo (Fedora Engineering Steering Committee), which is responsible for the technical aspects of the Fedora distribution's development. If the proposal is approved, support for installing Fedora in UEFI mode on disks with MBR (Master Boot Record) partition tables will be discontinued on x86 systems, but it will remain on ARM and RISC-V systems.
The reason for discontinuing MBR support is attributed to the low reliability of booting in such configurations, inconsistency of MBR support in firmware, and lack of proper testing in Fedora (the GRUB2 documentation prescribes using GPT for UEFI). It is anticipated that by leaving only GPT support in the Anaconda installer on x86 systems, emergency failures during boot caused by efibootmgr issues can be avoided. Discontinuing MBR support will also reduce the burden on users' support staff, simplify maintenance, and streamline testing.
Initially, MBR support in UEFI mode was added to Fedora in 2019 for compatibility with cloud platforms like AWS that do not support GPT. Currently, cloud platforms have eliminated this limitation, and MBR support has become irrelevant in this context.
Source: opennet.ru
