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Date: Sun, 12 Jul 2015 11:34:14 +0200
From: Kurt Jaeger <lists@opsec.eu>
To: Allan Jude <allanjude@freebsd.org>
Cc: freebsd-current@freebsd.org
Subject: Re: Lenovo BIOS boot fix
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Hi!

> I have spent my weekend researching why my Lenovo X220s refuse to boot
> from GPT partitioned disks.
> 
> Based on this mailing list post:
> https://lists.freebsd.org/pipermail/freebsd-i386/2013-March/010437.html
> 
> I have written a patch for gpart to change the way the PMBR is created.
> 
> Instead of writing the 0xee partition in the first slot (offset 0), it
> writes it to the 2nd slot (offset 1).
> 
> This resolves the issue on my Lenovo X220s, and the installed image
> boots fine on my T530, and various other non-lenovo amd64 machines at my
> house.
> 
> If others could please test this image (it is a pre-installed system, so
> just dd it to a memory stick, and see if it boots. Can be safely done
> without touching your disks), that would be most helpful.

I used the image, put it on a stick, and set the BIOS to boot uefi-only
or gpt-only and it never booted ? It's early sunday morning, it was
a long week, so maybe I just missed something I'm supposed to do ?

BIOS is 1.39.

-- 
pi@opsec.eu            +49 171 3101372                         5 years to go !