gpart bootcode Operation not permitted

[Miroslav Lachman]

Artem Kuchin wrote on 2020/04/03 21:48:
> 03.04.2020 22:44, Miroslav Lachman пишет:
>> Artem Kuchin wrote on 2020/04/03 21:23:
>>
>> gpart bootcode -b /boot/pmbr -p /boot/gptboot -i 1 ada0
>> gpart bootcode -b /boot/pmbr -p /boot/gptboot -i 1 ada1
>>
> 
> But why i cannot then just install it into mirror/boot?
> 
> It does now even show it
> 
> # gpart show mirror/boot
> gpart: No such geom: mirror/boot.
> 
> # gpart show boot
> gpart: No such geom: boot.

gpart show does not work for unconfigured devices.
If you put brand new empty HDD in to the machine (for example ada2) then 
gpart show ada2 will not work too until you create some scheme on it 
with "gpart create". Boot partition does not use scheme / filesystem.

Miroslav Lachman