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Date:      Sat, 10 Sep 2011 21:10:33 +0200
From:      Johan Hendriks <joh.hendriks@gmail.com>
To:        Fbsd8 <fbsd8@a1poweruser.com>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: returning to 8.2 from 9.0
Message-ID:  <4E6BB629.9010205@gmail.com>
In-Reply-To: <4E6B8EB0.8070303@a1poweruser.com>
References:  <4E6B8EB0.8070303@a1poweruser.com>

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Fbsd8 schreef:
> Have test pc. Been running 8.2 just fine. Installed 9.0 from cd and 
> after playing around tried to reinstall 8.2. Got error about GTP table 
> while trying to setup the HD. Used 8.0 livecd to
> "dd if=/del/zero of=/dev/ad0 count=5 to wipe the start of the HD clean.
> Now 8.2 install issues this msg
> GEOM: ad0: the primary GPT table is corrupt or invalid.
>
> How do I fix the HD so 8.2 will install?
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maybe this little script helps you.
http://wiki.freenas.org/faq:0129

It helped me in several situations.

If that does not do the job, you could try dban disknuke that will wipe 
the disk completely

regards,
Johan Hendriks



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