On 05/04/2020 13:52, Neil Bothwick wrote:
This isn't strictly true, the ESP must be vfat, but you can still have an ext? /boot.
This isn't true at all - you've got the cart before the horse. The original (U)EFI spec comes from Sun, I believe, with no vfat in sight.
A standards-compliant factory-fresh Mac boots using UEFI with no vfat in sight.
A standards-compliant UEFI firmware MUST BE CAPABLE of booting from (a certain version of) vfat. So if you use a vfat partition the spec says it must work. It doesn't demand you use vfat, so Macs use HFS+ or whatever it is, and there is no reason why eg System7 couldn't write their own firmware to use ext2 or whatever.
Cheers, Wol
