Date: Thu, 06 Oct 2011 18:40:26 +0400 From: "Andrey V. Elsukov" <ae@FreeBSD.org> To: Ivan Voras <ivoras@freebsd.org> Cc: freebsd-current@freebsd.org, freebsd-geom@freebsd.org Subject: Re: RFC: Project geom-events Message-ID: <4E8DBDDA.2070405@FreeBSD.org> In-Reply-To: <j6k7cm$mv0$1@dough.gmane.org> References: <1927112464.20111004220507@serebryakov.spb.ru> <4E8B7A27.5070908@quip.cz> <344794801.20111005101957@serebryakov.spb.ru> <4E8C1426.60107@quip.cz> <251861322.20111005125825@serebryakov.spb.ru> <4E8C6E85.90005@quip.cz> <CACdU%2Bf8mA1wLUnHVyrJwaf89ahf2oc_904=8mme7kkBLxLSCCQ@mail.gmail.com> <4E8CD662.90202@quip.cz> <j6k252$hpm$1@dough.gmane.org> <4E8D9136.6040200@digsys.bg> <j6k7cm$mv0$1@dough.gmane.org>
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[-- Attachment #1 --] On 06.10.2011 16:36, Ivan Voras wrote: > 2) this makes the device unbootable as the GPT partition is per > definition not valid. It still stores the primary partition table on the > first sector (and the following sectors...), but its secondary table is > stored at one sector short of device's last sector (which is used by > glabel). Any utilities and BIOSes which test for GPT will find the first > table but not the last and depending on how sensitive / broken they are, > they will either recognize a broken GPT (and/or try to fix it, > destroying the glabel label), or not work at all. Actually we support booting from GPT when secondary GPT header is not in the last LBA. Our bootcode will complain in this situation, but it works. -- WBR, Andrey V. Elsukov [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (FreeBSD) iQEcBAEBAgAGBQJOjb3hAAoJEAHF6gQQyKF6W5AH/3HXS0y2iXBZBDKTtpaRkQS4 wlqYkeaOleUvspkQWu1hFCeKliU/SXgFxJPk2XaRKsvuIBuSVanWDHUzJg64JhUX gtp3mE/MYhSV/hI46JJU9+SLmPZS/HD5kdrEwaKqsAa1pSnzMgBj0y1dctqK7DWJ F/5k0d8cCzk6dUJXM0tkbF4Irlgl1UOj/050VftvL/R8wXqOlJiht2xFWP4FyAGZ 7JUCPAvVU7eijXT7+zXo7yo5wbY491KA/sfy06KuD5LeicYt0KrUsuH6S1k92cQc 6wR2OwT5RFzUUpkbULcTso3hF0l0DO638cgceKuJXJCREZYWuZEhZdLB9Qri3C0= =n6QK -----END PGP SIGNATURE-----
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