GPT Support on Freebsd

[Franck]

Hi,

Thank you for help. I provide you the maximum information about my partitions.

Before, I watch the kernel configuration. When I fetch the kernel
sources, I can see 2 differents configuration files : DEFAULTS and
GENERIC. and the line : "options         GEOM_PART_GPT" is present
only in GENERIC. If I use my knowledge in linux systems, I would say
that my actual kernel was compiled with the DEFAULTS conf, which
doesn't enable the support of GPT for GEOM. Maybe I'm wrong, my knew
kernel is compiling...

On Freebsd :

[Dante at iris-bsd /usr/home/Dante]$ ls /dev/|grep ^ad
ad0
ad0s2
ad0s3
ad0s4
ad0s4a
ad0s4b
ad0s4c

my dmesg :
http://pastebin.com/m7b5f130e

On Gentoo :

dante at iris:~ % LANG=C sudo parted /dev/sda
GNU Parted 1.8.8
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) p
Model: ATA ST9200420ASG (scsi)
Disk /dev/sda: 200GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt

Number  Start   End     Size    File system  Name                  Flags
 1      20.5kB  210MB   210MB   fat32        EFI System Partition  boot
 2      210MB   19.4GB  19.2GB  hfs+         MacOSX
 3      19.4GB  19.6GB  206MB   ext2
 4      19.6GB  39.5GB  19.9GB
 6      39.5GB  42.7GB  3142MB  linux-swap
 5      42.7GB  58.4GB  15.7GB  ext3         Gentoo
 7      58.4GB  74.1GB  15.7GB  ext3
 9      89.9GB  200GB   110GB   ext3

The 4 is my ufs partition. UFS is not recognize on my gentoo system.
The partition 7 is my home, the one that I want to mount under
freebsd.

Again, thank you for your help

Franck

2008/10/29 John Baldwin <jhb at freebsd.org>:
> On Wednesday 29 October 2008 11:52:19 am Franck Royer wrote:
>> John Baldwin a écrit :
>> > On Wednesday 29 October 2008 07:42:18 am Lowell Gilbert wrote:
>> >
>> >> Franck Royer <royer.franck at gmail.com> writes:
>> >>
>> >>
>> >>> Can I oblige pcbsd to look the gpt table instead of the msdos one ? How
>> >>> can I access to my fifth partition ?
>> >>>
>> >> John Baldwin (jhb) has been working on GPT support, but it's still
>> >> reported to be a work in progress. It works as far as recognizing
>> >> disks over 16TB.  It also gets picked up by the geom framework.  I'm
>> >> not sure about booting, although there are tantalizing hints in the
>> >> manual pages.
>> >>
>> >
>> > GPT booting works just fine on 6.x and later.  Using the gpt(8) utility
> you
>> > basically do:
>> >
>> > # gpt create foo0
>> > # gpt boot foo0
>> >
>> > The second command creates a special boot partition in /dev/foo0p1.  You
> can
>> > then add partitions:
>> >
>> > # gpt add -t ufs <other params like size if needed> foo0
>> > # newfs /dev/foo0p2
>> >
>> > gpart(8) in HEAD works similarly.  The one thing lacking is that
>> > sysinstall/libdisk doesn't handle GPT, so there isn't a nice way to do it
>> > during installation.
>> >
>> >
>> Ok thank you. But actually, it's not what I'm looking for.
>>
>> I use freebsd on a macbook. On this macbook, I already have a gpt,
>> refit, mac os x and some linux partitions. The problem is freebsd, which
>> doesn't recognize partitions after the fourth one (but my gentoo linux
>> see them).
>>
>> Then, I suppose freebsd use the mbr partition table (synchronized from
>> the gpt one using refit) to populate the /dev, but partitions after the
>> fourth, which are those I want to use, are only indexed in the gpt.
>>
>> Finally, I want to force freebsd to use the gpt on my hard drive to
>> allow it to see others partitions.
>>
>> I don't want to destroy my actual gpt, maybe one day, but no right now.
>>
>> Tell me if my english is too bad to be understood.
>>
>> I just want to precise that I use pcvbsd 7.0, so the kernel
>> configuration might be different than the freebsd generic one.
>
> What device entries do you see in /dev?
>
> --
> John Baldwin
>



--
Franck Royer

Student of Manchester University
Etudiant Ingénieur de l'ENSIIE (Ecole Nationale Supérieure
d'Informatique pour l'Industrie et l'Entreprise)

e-mail/jabber: royer.franck at gmail.com



-- 
Franck Royer

Student of Manchester University
Etudiant Ingénieur de l'ENSIIE (Ecole Nationale Supérieure
d'Informatique pour l'Industrie et l'Entreprise)

e-mail/jabber: royer.franck at gmail.com