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From: Ricky G <ricky1252@hotmail.com>
To: Ian Fitzgerald <ianf@ozemail.com.au>
CC: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>
Subject: RE: Adding 9.1 disk to 10.2 machine
Date: Mon, 26 Oct 2015 20:55:46 -0400
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> From: ianf@ozemail.com.au
> To: freebsd-questions@freebsd.org
> Subject: Adding 9.1 disk to 10.2 machine
> Date: Tue=2C 27 Oct 2015 11:44:56 +1100
>=20
> I have a second disk with data written on a FreeBSD 9.1 machine. I remove=
d
> the disk and used the first disk for a clean install of 10.2.
>=20
> Re-fitting the second disk=2C the second disk is recognised as ada1.
>=20
> =20
>=20
> I wish to mount it as /disk2 (created on /)=2C without newfs as I wish to
> retain the data on it. My attempts at placing an entry in /etc/fstab were
>=20
> /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 cha=
nge /dev/ada1p2 to one of these labels. /dev/gpt/${LABEL}   or gptid

 		 	   		  =