[Bug 290857] bsdinstall: ZFS install produces fat16 EFI filesystem - should be fat32

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=290857

Warner Losh <imp@FreeBSD.org> changed:

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--- Comment #7 from Warner Losh <imp@FreeBSD.org> ---
So EFI standard 2.9 says a few paragraphs later
"The EFI firmware must support the FAT32, FAT16, and FAT12 variants of the EFI
file system."

There's a minimal size for FAT32 as well, and there's no *REQUIREMENT* that the
ESP be a minimum size to support it. And the word 'encompasses' to me reads as
'typically includes' not 'prescriptively limits'. Partitions smaller than the
minimum size for FAT32 can't be FAT32.

So is this a bug on a specific system? Are there systems that won't boot if we
don't do this? Are we limiting storage on a large partition by only formatting
it with FAT16?

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