replacing zfs disk (freebsd-boot vs freebsd-efi)

Victor Sudakov vas at
Wed Oct 30 16:02:32 UTC 2019

mike tancsa wrote:


> > gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 2 ada0
> > The above ^^^^^ should be unnecessary. Your UEFI firmware will find the
> > partition of the "efi" type and try to load /EFI/BOOT/BOOTX64.EFI from
> > there, which in turn will sniff your ZFS filesystems for the loader.
> I think FreeBSD's install added it by default. I wonder if that was done
> to make the disks portable between EFI and non EFI systems ? I will have
> to test to see if thats the case.

If you select "GPT (UEFI)" during installation, FreeBSD's install does
not even create a freebsd-boot partition.

If you select "GPT (BIOS)", it may create it, I think.

Victor Sudakov,  VAS4-RIPE, VAS47-RIPN
2:5005/49 at fidonet
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