Adding 9.1 disk to 10.2 machine

[Ricky G]

> From: ianf at ozemail.com.au
> To: freebsd-questions at freebsd.org
> Subject: Adding 9.1 disk to 10.2 machine
> Date: Tue, 27 Oct 2015 11:44:56 +1100
> 
> I have a second disk with data written on a FreeBSD 9.1 machine. I removed
> the disk and used the first disk for a clean install of 10.2.
> 
> Re-fitting the second disk, the second disk is recognised as ada1.
> 
>  
> 
> I wish to mount it as /disk2 (created on /), without newfs as I wish to
> retain the data on it. My attempts at placing an entry in /etc/fstab were
> 
> /dev/ada1p2      /disk2    ufs          rw 2 2

The Answer is using a labels instead of geom. man glabel
The partitions may have labels already and all that needs to be done is change /dev/ada1p2 to one of these labels. /dev/gpt/${LABEL}   or gptid