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Date: Tue, 28 May 2013 09:53:42 -0600 (MDT)
From: Warren Block <wblock@wonkity.com>
To: Polytropon <freebsd@edvax.de>
Subject: Re: slice and partition in FreeBSD 9.1
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On Tue, 28 May 2013, Polytropon wrote:

> See this comparison:
>
> http://www.wonkity.com/~wblock/docs/html/disksetup.html
>
> http://www.freebsd.org/doc/en/books/handbook/geom-glabel.html
>
> http://www.freebsd.org/doc/handbook/disks-adding.html

There is a little information on the common types here, too:
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/bsdinstall-partitioning.html#bsdinstall-part-manual

> Still you have the choice to use MBR partitioning if this is
> a requirement (maybe due to hardware that has problems booting
> GPT partitioned media? who knows).

Some BIOS systems think GPT partitions mean the system is running UEFI. 
On those system, MBR is required to boot correctly.  I think this is 
still a problem with the Thinkpad T4xx and T5xx models, possibly others.