For OpenBSD installation, I choose custom disk in partition. And I set the first partition is MSDOS and mountpoint is /boot/efi and the second partition is /, the last partition is swap. And I continue install openbsd, but at least it warning me that boot install failed, the system will not boot.
And set none mountpoint is also be errors. Last I Automated partition first and delete all partition except i that is MSDOS partition. Then everything is fine. So how to customize disk partition in UEFI except Auto creates EFI partition? ykla
