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Date:      Sat, 10 Sep 2011 18:55:31 -0400
From:      Fbsd8 <fbsd8@a1poweruser.com>
To:        Johan Hendriks <joh.hendriks@gmail.com>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: returning to 8.2 from 9.0
Message-ID:  <4E6BEAE3.10402@a1poweruser.com>
In-Reply-To: <4E6BCBBF.7000802@gmail.com>
References:  <4E6B8EB0.8070303@a1poweruser.com> <4E6BB629.9010205@gmail.com>	<4E6BC5B2.9020902@a1poweruser.com> <4E6BCBBF.7000802@gmail.com>

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Johan Hendriks wrote:
> Fbsd8 schreef:
>> Johan Hendriks wrote:
>>> 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?
>>>> _______________________________________________
>>>> freebsd-questions@freebsd.org mailing list
>>>> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
>>>> To unsubscribe, send any mail to 
>>>> "freebsd-questions-unsubscribe@freebsd.org"
>>> 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
>>>
>>>
>>
>>
>> diskinfo da0
>>
>> says Device not configured
>>
>> I all ready did  "dd if=/dev/zero of=/dev/da0 count=2 to wipe the 
>> front of the disk.
> i now see two different things?
> dd if=/del/zero of=/dev/ad0 count=5
> dd if=/dev/zero of=/dev/da0 count=2
> 
> first your disk is adx and the second time it is dax
> 
> Make sure you use the right disk.
> There is also a part add the end of the disk that needs to be wiped, not 
> only the start of the disk.
> 
> regards,
> Johan Hendriks
> 
> 
> 


Thanks that little script at

http://wiki.freenas.org/faq:0129

did the trick.



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