Re: Where to get clue about UEFI and zfs boot clue?

how "generic" is the initial boot selector? If I have one already
which points to debian on the same MMC, is there any point installing
the FreeBSD one? the generic one I have chain loads what looks like
grub. I want to minimise damage to the MMC and so don't want to
destroy this state if I can, but in the final analysis I can, if the
best path is to recreate an EFI partition of known quality.

the one I have (zimablade) is able to boot the SSD with a FreeBSD
install if I break to F11 so there obviously is a bootable media
reference visible at EFI time but I cannot work out how to make it the
autoboot target. That in itself might be the reason to install the
FreeBSD one.  Do I e.g. have to put something into the MMC backed EFI
msdos partition, and boot to that? Is that a loader, or a kernel? How
does it find the (ZFS) FreeBSD partition I want to be the live boot?
(ie is the FreeBSD /boot partition going to have to live on the MMC
itself)

thats about it for now. FreeBSD on the zimablade (quad core, 16GB
DDR3L, fanless, small box with a PCIx2 breakout connector and 2xSATA
on the main board) works fine. I'm booting into TrueNAS core so its
FreeBSD 13.1 and working fine. Every mainboard device seems to be
recognized and the 4 port SATA card I am running on the PCI connector
works fine. zimablade wants you to run some debian hosted suite, I
prefer to be in BSD. That said, it does have VMs and docker.

-G


On Sat, Mar 16, 2024 at 1:59 PM Warner Losh <imp@bsdimp.com> wrote:
>
>
>
> On Fri, Mar 15, 2024, 3:47 PM George Michaelson <ggm@algebras.org> wrote:
>>
>> I feel in a bit of a corner case window regarding UEFI boot configuration, multiple disks, and zfs. Ignorance is not bliss.
>>
>> Probably it's UEFI clue more than FreeBSD clue I lack, but the target OS is a zfs backed FreeBSD.
>>
>> Which ML is the best place to ask? Here?
>
>
> Here. What's your question?
>
> Warner
>
>> G