Date: Fri, 6 Jul 2012 21:04:09 +0200 From: Polytropon <freebsd@edvax.de> To: Eitan Adler <lists@eitanadler.com> Cc: Bas Smeelen <b.smeelen@ose.nl>, Rick Miller <vmiller@hostileadmin.com>, Polytropon <freebsd@edvax.de>, freebsd-questions@freebsd.org Subject: Re: Does FreeBSD start slices at head boundaries? Message-ID: <20120706210409.4cca6eb5.freebsd@edvax.de> In-Reply-To: <CAF6rxgm%2B2rb0o5QUmA7_3rd9yp88f%2BU7yVvOfznC0ecSBg9O9Q@mail.gmail.com> References: <CAHzLAVE0CahZhkKzU5=bLy5AvKsq_qgmqwAiO9BhWD3k1_uFvQ@mail.gmail.com> <alpine.BSF.2.00.1207061842370.5024@wojtek.tensor.gdynia.pl> <4FF71637.9030206@d3photography.com> <20471.8240.321332.987229@jerusalem.litteratus.org> <4FF724AF.9090602@ose.nl> <20120706202558.2a6d7e42.freebsd@edvax.de> <CAHzLAVH8hZ%2B=EXgUgihrAJ1EwtXvVZ1fgQcV6moDDitPYz2bRg@mail.gmail.com> <CAF6rxgm%2B2rb0o5QUmA7_3rd9yp88f%2BU7yVvOfznC0ecSBg9O9Q@mail.gmail.com>
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On Fri, 6 Jul 2012 11:58:03 -0700, Eitan Adler wrote: > On 6 July 2012 11:44, Rick Miller <vmiller@hostileadmin.com> wrote: > > Thanks for this explanation. > > > > Is there any performance advantage to using a "dedicated disk" layout > > over the old way of creating a slice and having your partitions within > > it? > > Slices isn't the "old" way. Compared to the new and modern GPT, it is. :-) However, if you keep using the "old" way, it will still be supported and will not confuse either BIOSes or other systems that are maybe installed on your machine. > There is no perf advantage for dedicated > disks. Maybe you get a > few kb of extra space. I'm also not aware of any performance issues. > Don't do it. > > http://www.unixguide.net/freebsd/faq/09.03.shtml According to the article, there are some BIOSes that don't seem to like disks not containing a "DOS primary partition" to start their boot chain. While this may be true, I have never experienced it. For maximum security, you can use the "old" approach of using fdisk + disklabel (creating slice, creating partitions within slice). This also delivers most compatibility for other systems, if it should be needed, e. g. in a multiboot environment. -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ...
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