Large file system creation

Erik Trulsson ertr1013 at
Tue Apr 8 13:30:13 UTC 2008

On Tue, Apr 08, 2008 at 08:39:48AM -0400, Brian McCann wrote:
> Hi all.  I'm trying to create a ~9TB partition on a new file server.
> I thought FreeBSD now supported this (I'm on 7.0), but I can't figure
> it out.  I go into sysinstall, create the partition in fdisk using "A
> = Use Entire Disk), write it to disk, exit sysinstall and re-run
> it...and sysinstall doesn't show what it showed before I exited last
> time.
> Can someone shed some light on what I'm doing wrong here?

The filesystem (UFS2) supports disks larger than 2TB, but fdisk(8) and
bsdlabel(8) (which are what sysinstall uses to partition the disk) do not
support disks larger than 2TB due to limitations in the on-disk format they

You will need to use gpt(8) instead to partition your disk.
This cannot be done from sysinstall and you normally cannot boot from
a gpt(8)-partitioned disk due to lack of support in the BIOS of most PC.

<Insert your favourite quote here.>
Erik Trulsson
ertr1013 at

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