Limine 9.0 is out today as the newest major release for this open-source modern multi-protocol bootloader and boot manager. Limine also boasts its own Limine Boot Protocol in addition to the native Linux support and chainloading/multiboot capabilities.
One change that will surprise some readers is Limine 9.0 doing away with EXT4 file-system support as well as older EXT2 and EXT3 support. The change-log notes of dropping the EXT4 file-system support:
With the help of some replies I got it figured out
The bootloader doesn’t need to support anything other than your boot partition which can be in your normal drive space, or it can be in a dedicated UEFI partition which isn’t gonna be ext4, so this project aims just to support booting from the UEFI partition
Check the other replies I got if you want more context :)