This section describes how to add a new
SATA disk to a machine that currently only
has a single drive. First, turn off the computer and install
the drive in the computer following the instructions of the
computer, controller, and drive manufacturers. Reboot the
system and become
root
.
Inspect /var/run/dmesg.boot
to ensure
the new disk was found. In this example, the newly added
SATA drive will appear as
ada1
.
For this example, a single large partition will be created on the new disk. The GPT partitioning scheme will be used in preference to the older and less versatile MBR scheme.
If the disk to be added is not blank, old partition
information can be removed with
gpart delete
. See gpart(8) for
details.
The partition scheme is created, and then a single partition is added. To improve performance on newer disks with larger hardware block sizes, the partition is aligned to one megabyte boundaries:
#
gpart create -s GPT ada1
#
gpart add -t freebsd-ufs -a 1M ada1
Depending on use, several smaller partitions may be desired. See gpart(8) for options to create partitions smaller than a whole disk.
The disk partition information can be viewed with
gpart show
:
%
gpart show ada1
=> 34 1465146988 ada1 GPT (699G) 34 2014 - free - (1.0M) 2048 1465143296 1 freebsd-ufs (699G) 1465145344 1678 - free - (839K)
A file system is created in the new partition on the new disk:
#
newfs -U /dev/ada1p1
An empty directory is created as a mountpoint, a location for mounting the new disk in the original disk's file system:
#
mkdir /newdisk
Finally, an entry is added to
/etc/fstab
so the new disk will be mounted
automatically at startup:
/dev/ada1p1 /newdisk ufs rw 2 2
The new disk can be mounted manually, without restarting the system:
#
mount /newdisk
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Questions that are not answered by the
documentation may be
sent to <freebsd-questions@FreeBSD.org>.
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