UEFI dual boot zfs root

[Andreas Nilsson]

Hello,

I'm trying to install current on my lenovo x1 yoga ( and keeping it dual
boot for now).

I have a fair amount of disk free after resizing. I can't seem to workout
how to do the partitioning. Do I only need the freebsd-zfs partition (
assuming no/zvol-swap?

Do I manually copy boot1.efi to the existing EFI partition?

Best regards
Andreas
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[Warren Block]

On Sun, 15 May 2016, Andreas Nilsson wrote:

> Hello,
>
> I'm trying to install current on my lenovo x1 yoga ( and keeping it dual
> boot for now).
>
> I have a fair amount of disk free after resizing. I can't seem to workout
> how to do the partitioning. Do I only need the freebsd-zfs partition (
> assuming no/zvol-swap?

I would think, but have not tested ZFS with UEFI.

> Do I manually copy boot1.efi to the existing EFI partition?

Yes. Mount the EFI partition with msdosfs, then copy boot1.efi to
/EFI/BOOT/. Then comes the tricky part, getting the UEFI firmware to
add that as a boot option. In a Dell UEFI system, it could be added to
the boot options, and the firmware has the user select the file from the
EFI partition for that option.

[Ben Woods]

Indeed, just 4 days ago I installed a recent snapshot of FreeBSD 11
current, with root on ZFS and UEFI.

I had to do 2 steps manually, as they were not supported by the installer
as an auto option:

1. The auto root on ZFS settings don't let you use a partition or spare
space... You must give it a full disk. But because I was dual booting
Windows I chose manual partitioning, dropped to a shell and setup the zpool
and zfs datasets manually, with altroot=/mnt. Rather than follow one of the
outdated wiki manuals, I used them as a general guide, but read the
bsdinstall auto shell script to set it up with the same datasets and
properties.

2. After the install had completed, I had to mount my efi partition as
msdosfs and copy the boot1.efi to it. For me, I have installed the rEFInd
boot loader, so I just copy the file into /EFI/Boot/ and it shows up in the
menu upon boot.
http://www.rodsbooks.com/refind/

The FreeBSD EFI loading of a ZFS file system works great!

Cheers,
Ben


--

--
From: Benjamin Woods
wood...@gmail.com

[Andreas Nilsson]

Thank you both! I'll resume the installation procedures then!

Best regards
Andreas