this post was submitted on 18 Feb 2025
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UEFI standard requires a FAT32 partition. It is usually a first partition on disk, 500MB in size. The linux kernel to boot, together with initrams disk can be placed in the root partition, usually ext4 or btrfs, or it can be placed in uefi partition. Limine will only support booting the kernel from uefi fat32 partition to avoid having to support ext4 and btrfs filesystems. The root partition will still be ext4 or btrfs, the code to mount it would be in kernel or in initramfs. Edit: size of uefi partition
Surely you meant MB ๐
For when you want every kernel version.
You can call that partition: EVERYONE
Ahh, so the boot partition on linux doesn't necessarily need to be ext4, so it doesn't matter if it's not supported
Between you and another reply I understand now, thank you!
UEFI standard requires support for FAT and then can implement other file systems for the EFI System Partition.
But no vendor actually implements any with the exception of those forced to include APFS by Apple. So FAT is the de facto standard for all ESPs for years.
Actually some vendors implements NTFS driver in their UEFI as well.