I've used Limine on one of my machines for a good while now. It is quite simply, a UEFI executable where you can point to something bigger, be it another bootlo

I've used Limine on one of my machines for a good while now. It is quite simply, a UEFI executable where you can point to something bigger, be it another bootloader or a kernel. Removing filesystem support is more or less an inconvenience since you can load up a kernel that can access that filesystem and you are good to go. Doesn't matter what filesystem, because the bootloader doesn't care.