returning to 8.2 from 9.0

[Fbsd8]

Michel Talon wrote:
> Fbsd8 wrote:
> 
>> How do I fix the HD so 8.2 will install?
> 
> man gpart, in particular the RECOVERING section. there are 2 copies of
> the GPT you have erased only one. See gpart recover and gpart destroy.
> 
> By the way FreeBSD-8.2 has the gpart utility so i suppose installation
> on GPT is possible. And as far as i have seen, FreeBSD9 seems an
> extremely nice release, with tons of exciting new stuff. The new
> installer is *very* efficient, the system is fast, even with witness,
> I don't see many reasons to come back to 8.2.
> 

After erasing the front of the HD nether 9.0 or 8.2 will install.
Can I use livecd dd command to erase the second copy of the GPT?
Where is it at?