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Date:      Sun, 9 Dec 2012 08:32:18 -0700 (MST)
From:      Warren Block <wblock@wonkity.com>
To:        Dieter BSD <dieterbsd@engineer.com>
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: FreeBSD for serious performance?
Message-ID:  <alpine.BSF.2.00.1212090816090.5523@wonkity.com>
In-Reply-To: <20121209091305.238100@gmx.com>
References:  <20121209091305.238100@gmx.com>

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On Sun, 9 Dec 2012, Dieter BSD wrote:

>> B. Use GPT, which does not have the CHS baggage.  It is easier and more
>>    versatile.  My systems with GPT disks don't complain about track
>>    alignment.  Or maybe that's ahci(4)'s doing.
>
> I never found a way to boot from different partitions, much less
> different disks with GPT.

Grub (or grub2) can do it.  I haven't tried it because other operating 
systems I multiboot do not support GPT anyway.  If you're booting 
multiple versions of FreeBSD, see gpart(8) for some partition attributes 
that may help.  Or even consider ZFS boot environments.
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