Is it possible to install FreeBSD on a single MBR slice with ZFS

Manish Jain bourne.identity at
Sat Apr 15 14:38:20 UTC 2017

On 04/15/17 16:09, krad wrote:
> it works fine on a single slice. I would probably do a manual install to 
> be safe, but thats just me, but then I was doing rootonzfs way before 
> the installation program supported it.

If I remember correctly, whenever I try to use ZFS in the installer :

1) the Guided (Root On ZFS) approach simply does not let me select a 
slice. I have to use the entire disk

2) Using manual partitioning on my MBR disk (SSD), if I delete an 
existing slice, create a new one, and then a partition inside it of type 
freebsd-zfs with / as mount-point, the installer warns "This 
configuration is not bootable in your architecture".

I got around this by using a 2-partition 'hack' in the slice :

a) first partition for / as type freebsd-ufs
b) second partition for /usr as type freebsd-zfs

The install goes through with no warning, but then when I boot the 
installation, I face the problem that /usr is not available and the boot 
is interrupted midway with an unpleasant message.

Manish Jain

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