Date: Fri, 30 Dec 2016 20:08:55 +0300 From: "Andrey V. Elsukov" <ae@FreeBSD.org> To: Slawa Olhovchenkov <slw@zxy.spb.ru> Cc: freebsd-hackers@freebsd.org Subject: Re: How to safely remove rest of GTP? Message-ID: <22d5dece-f14b-3bef-b3dd-8bb6226e0d28@FreeBSD.org> In-Reply-To: <20161230164652.GO37118@zxy.spb.ru> References: <20161230124407.GN37118@zxy.spb.ru> <d79b8568-72e8-415e-4923-14e3c730267e@FreeBSD.org> <20161230164652.GO37118@zxy.spb.ru>
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On 30.12.2016 19:46, Slawa Olhovchenkov wrote: > On Fri, Dec 30, 2016 at 07:28:19PM +0300, Andrey V. Elsukov wrote: > >> On 30.12.2016 15:44, Slawa Olhovchenkov wrote: >>> How to safely remove rest of GPT? >>> Disk have actual data (part of ZFS), I am don't need to destroy this >>> data. >>> >>> GEOM: da6: the primary GPT table is corrupt or invalid. >>> GEOM: da6: using the secondary instead -- recovery strongly advised. >>> GEOM: da22: the primary GPT table is corrupt or invalid. >>> GEOM: da22: using the secondary instead -- recovery strongly advised. >>> GEOM: da6: the primary GPT table is corrupt or invalid. >>> GEOM: da6: using the secondary instead -- recovery strongly advised. >>> GEOM: da22: the primary GPT table is corrupt or invalid. >>> GEOM: da22: using the secondary instead -- recovery strongly advised. >> >> You may try attached patch, I did only basic tests, so first try >> somewhere :) > > What purpose of this patch? In case when you have not valid primary header, `gpart destroy` will not touch first two sectors. In you case you can wipe only last sector, like Ian suggested, but use 'gpart destroy -F da6' instead of dd. -- WBR, Andrey V. Elsukov
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