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On 09/07/2014, Bzzzz <lazyvirus@gmx.com> wrote:


> BTW, sorry to hijack a bit this thread, but what could
> be the advantages to use UEFI (I just have Debian on my
> laptop and disabled it from ancient posts I read).


It is my understanding (and, once again, I am no expert), that two
distinct advantages of a UEFI/GPT system ofer what it replaced, are
that no differentiation exists, between primary and other partitions,
and, a UEFI/GPT system, can have up to 128 partitions.

Now, apart from the bog-horrible MS Windows 8, which I found simply
too difficult to be able to use, taking up at least three partitions
(with MS Windows 7 etc, taking up at least 3 primary partitions, on
the systems before UEFI/GPT), from memory, in the primary partitions,
creating an extended partition, in which to create the logical
partitions to instal Debian, and / or other Linux distributions, with
the associated logical partitions (/ ,  /home , /swap , /usr, /var,
etc (for people who set them all up as separate partitions) ) used in
itself, a primary partition, so that a dual or multiple boot system
with MS Windows and Linux, used all four primary partitions. Then, if
a person wanted to instal a version of UNIX, such as a version of BSD,
a primary partition was required, so that a system administrator, if
retaining an MS Windows installation on a system, could instal either
Linux, or, a version of UNIX, but, not Linux and one or more versions
of UNIX, and, not more than one version of UNIX, if UNIX was to be
preferred over Linux.

Now, with FreeBSD, and, following that, PC-BSD, which is based on
FreeBSD, and, is a workstation form of BSD, from version 10.0 onward
(PC-BSD is now at version 10.0.2 - see http://www.pcbsd.org/),
compatibility with the UEFI/GPT systems was supposedly included, thus
eliminating the need for a pimary partition installation, so that a
system administrator could supposedly have MS Windows (>= v8)
installed on a system, and, instal one or more Linux distributions,
and, one (or more? - of this, I am not sure) versions of UNIX, eg
PC-BSD, OpenBSD, NetBSD, FreeBSD, etc, without needing to worry about
installing the UNIX versions in the limited (maxium of 4) number of
primary partitions.

Now, as an example, on this (pre-UEFI/GPT) computer, I have MS Windows
7, Ubuntu 10.04, and, Debian 6, installed, but I could not also instal

However, on a UEFI/GPT system, that I have, I have MS Windows 8
installed (but unusable), and, I added Debian 7.5, and, have tried to
instal PC-BSD 10.02, which is allowed on that system, due to the
UEFI/GPT. I am awaiting resolution of an installation problem
regarding the PC-BSD.

That is my understanding of an advantage of the UEFI/GPT systems, over
what they replaced, anyway, in that
1) they allow for up to 128 partitions, all being the equivalent of
primary partitions, and, thence
2) they allow for multiple boot systems that include a version of UNIX
in addition to a distribution (or, more than one) of Linux, in
addition to the dreadful MS Windows 8.

Bret Busby
West Australia

"So once you do know what the question actually is,
 you'll know what the answer means."
- Deep Thought,
 Chapter 28 of Book 1 of
 "The Hitchhiker's Guide to the Galaxy:
 A Trilogy In Four Parts",
 written by Douglas Adams,
 published by Pan Books, 1992


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