adding new disk >2TB, gpt?

Tue May 17 13:19:41 UTC 2011

Thanks for your answer!
I am trying out gpart.
On an old PC with 38 GB disk, I have triple boot Windows, OpenSuSE and
FreeBSD-8.2.
I created an unalloated space of 973 MB at the end.
To see the actuel disk geometry, I used  FreeBSDs  sysinstall
# sysinstall
Disk name:      ad0                                    FDISK Partition
Editor
DISK Geometry:  79780 cyls/16 heads/63 sectors = 80418240 sectors (39266MB)
Offset       Size(ST)        End     Name  PType       Desc  Subtype
Flags
         0         63         62        -     12     unused        0
        63   22233897   22233959    ad0s1      4 NTFS/HPFS/QNX        7
  22233960   29639736   51873695    ad0s3      8    freebsd      165
  51873696        189   51873884        -     12     unused        0
  51873885   26539380   78413264    ad0s2      4 extended DOS, LBA       15
  78413265    1992060   80405324    ad0s4      4     ext2fs      131
  80405325      12915   80418239        -     12     unused        0

ad0s1 is my Windows,
ad0s2 is the extended partition where SuSE resides (swap and / partition)
ad0s3 is my FreeBSD-8.2 (with sections a, e, f, d for /, /tmp, /usr, /var)
and ad0s4 is the new freed space of 1992060 sectors = 973 MB

I tried
# gpart create -s gpt ad0s4
gpart: provider: Device not configured
( gpart create -s gtp /dev/ad0s4 :  same error)

# gpart show
=>      63  80418177  ad0  MBR  (38G)
        63  22233897    1  ntfs  (11G)
  22233960  29639736    3  freebsd  [active]  (14G)
  51873696       189       - free -  (95K)
  51873885  26539380    2  !15  (13G)
  78413265   1992060    4  !131  (973M)
  80405325     12915       - free -  (6.3M)

=>       0  26539380  ad0s2  EBR  (13G)
         0   2072385      1  !130  (1.0G)
   2072385  18249840  32896  !131  (8.7G)
  20322225   6152895  322576  !131  (2.9G)
  26475120     64260         - free -  (31M)

=>       0  29639736  ad0s3  BSD  (14G)
         0   1048576      1  freebsd-ufs  (512M)
   1048576   1994384      2  freebsd-swap  (974M)
   3042960   3092480      4  freebsd-ufs  (1.5G)
   6135440   1048576      5  freebsd-ufs  (512M)
   7184016  22455720      6  freebsd-ufs  (11G)
# gpart create -s gpt ad4
gpart: provider 'ad4': Invalid argument

how do I address the 974 MB partition ???

2011/5/16 Robert Simmons <rsimmons0 at gmail.com>

> On Mon, May 16, 2011 at 10:27 AM, n dhert <ndhertbsd at gmail.com> wrote:
> > I have a running FreeBSD-8.2-amd system,
> > FreeBSD was installed in jan 2009 (then FreeBSD 7.0), which a fisk disk
> of
> > 200 GB
> > for /, swap /usr /var /tmp.
> > Later that month, I added a 9 TB disk using /sbin/gpt
> > (since sysinstall uses bsdlabel/fdisk, it can't create disks larger than
> 2
> > TB)
> >
> > I want to add an extra >2TB disk... and thought to use gpt again as I did
> in
> > the past ..
> >
> > The FreeBSD book (in its 2011 version), section 18.3 still refers to
> using
> > gpt for disks >2TB
> > but the link gpt(8) leads to nowhere and /sbin/gpt no longer exists in
> > FreeBSD !
> >
> > There seem to be two alternatives:
> > 1) /sbin/gpart, of which the man page is quite similar to what gpt used
> to
> > be, but tells me
> > it is ''for disk partitoning GEOM class",
> > whereas gpt man pages (in 2009) said: gpt - "GUID partition table
> > maintenance utility".
> >
> > 2) a port sysutils/gdisk of which the Long Description says:
> >  "Edit GUID partition table (GPT) definitions in Linux, FreeBSD, MacOS X
> or
> > Windows"
> > but its web site shows a completely different command line interface, not
> > resembling the old gpt at all..
> >
> > What is exactly that difference between GEOM and GUID ?
> > I'd like to have things as similar as possible ..
> > Can I use /sbin/gpart for the extra 9 GB disk ? or do I have to stick
> with
> > GUID and use gdisk ?
>
> gpart create -s gpt ad0
> is the command you want to use.  Just replace ad0 with your device
> node. Also, "gpart show" will give a list of slices and partitions.
> You will then want to do:
> gpart add -s <size> -t <type> ad0
> The size and type syntax are in the gpart man page.
> If you want it bootable you will need a small partition at the
> beginning of the disk:
> gpart add -s 128k -t freebsd-boot ad0
> gpart bootcode -b /boot/pmbr -p /boot/gptboot -i 1 ad0
>
> You may adjust the size to shrink it to exactly fit the files, but I
> think if you're working in TBs you can spare a few wasted k.
>
> I submitted a PR to get the handbook updated to reflect gpart(8).
>
> Cheers,
> Rob
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