UEFI dual boot zfs root

Andreas Nilsson andrnils at gmail.com
Tue May 17 20:49:56 UTC 2016

On Tue, May 17, 2016 at 7:31 PM, Ben Woods <woodsb02 at gmail.com> wrote:

> On Tuesday, 17 May 2016, Warren Block <wblock at wonkity.com> wrote:
>> 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.
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> 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 outdated wiki manuals, I used them as a general guide, but read the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
> woodsb02 at gmail.com

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

Best regards

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