GPT Support on Freebsd

[John Baldwin]

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.

-- 
John Baldwin