Date: Mon, 13 Jul 2015 20:09:43 -0600 (MDT) From: Warren Block <wblock@wonkity.com> To: Adrian Chadd <adrian.chadd@gmail.com> Cc: Allan Jude <allanjude@freebsd.org>, Hans Ottevanger <hans@beastielabs.net>, "Andrey V. Elsukov" <bu7cher@yandex.ru>, freebsd-current <freebsd-current@freebsd.org> Subject: Re: Lenovo BIOS boot fix Message-ID: <alpine.BSF.2.20.1507131944110.70573@wonkity.com> In-Reply-To: <CAJ-Vmonox5yafz4q=M8N3TGPgUviuC2YXP4v0FTAMqZsY4=AZA@mail.gmail.com> References: <55A1FFD5.7080008@freebsd.org> <55A2030B.7010405@freebsd.org> <55A2835F.1030004@yandex.ru> <55A2ACDD.408@freebsd.org> <55A36FBE.1020206@beastielabs.net> <55A3D01E.40102@freebsd.org> <alpine.BSF.2.20.1507130915250.56039@wonkity.com> <55A3DF26.5020602@freebsd.org> <CAJ-Vmo=ofDKa5cUsEQh%2B=9CzOPN80yEQQL2meGRcZDW3Qeq2wQ@mail.gmail.com> <alpine.BSF.2.20.1507131905460.70573@wonkity.com> <CAJ-Vmonox5yafz4q=M8N3TGPgUviuC2YXP4v0FTAMqZsY4=AZA@mail.gmail.com>
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On Mon, 13 Jul 2015, Adrian Chadd wrote: > But the problem here is that we're using GPT but /not/ UEFI, right? > That's why that's all a mess? If you have a GPT layout, but it boots on a BIOS machine, the missing active flag on a standards-correct PMBR partition usually does not keep it from booting. Usually. The Lenovo thing is just a bug, firmware that sees GPT and automatically assumes that a GPT disk has all the UEFI features (extra partitions and security and cryptography and all that). That is wrong. Lenovo can fix it, and there should be villagers with pitchforks at their gates politely requesting that they fix it for these still-broken models like they have for other models.
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